658 lines
29 KiB
LLVM
658 lines
29 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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declare void @llvm.assume(i1 noundef) #0
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define i1 @gep_constant_positive_index(ptr %dst, ptr %lower, ptr %upper) {
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; CHECK-LABEL: @gep_constant_positive_index(
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; CHECK-NEXT: [[DST_ADD_4:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i64 4
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; CHECK-NEXT: [[PRE_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER:%.*]]
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; CHECK-NEXT: [[PRE_DST_UPPER:%.*]] = icmp ult ptr [[DST_ADD_4]], [[UPPER:%.*]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 [[PRE_DST_LOWER]], [[PRE_DST_UPPER]]
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; CHECK-NEXT: br i1 [[AND]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[CMP_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_UPPER:%.*]] = icmp ult ptr [[DST]], [[UPPER]]
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; CHECK-NEXT: [[RES_1:%.*]] = xor i1 true, true
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; CHECK-NEXT: [[DST_ADD_3:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 3
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; CHECK-NEXT: [[CMP_DST_ADD_3_LOWER:%.*]] = icmp uge ptr [[DST_ADD_3]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_ADD_3_UPPER:%.*]] = icmp ult ptr [[DST_ADD_3]], [[UPPER]]
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; CHECK-NEXT: [[RES_2:%.*]] = xor i1 [[RES_1]], true
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; CHECK-NEXT: [[RES_3:%.*]] = xor i1 [[RES_2]], true
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; CHECK-NEXT: [[CMP_DST_ADD_4_LOWER:%.*]] = icmp uge ptr [[DST_ADD_4]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_ADD_4_UPPER:%.*]] = icmp ult ptr [[DST_ADD_4]], [[UPPER]]
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; CHECK-NEXT: [[RES_4:%.*]] = xor i1 [[RES_3]], true
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; CHECK-NEXT: [[RES_5:%.*]] = xor i1 [[RES_4]], true
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; CHECK-NEXT: [[DST_ADD_5:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 5
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; CHECK-NEXT: [[CMP_DST_ADD_5_LOWER:%.*]] = icmp uge ptr [[DST_ADD_5]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_ADD_5_UPPER:%.*]] = icmp ult ptr [[DST_ADD_5]], [[UPPER]]
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; CHECK-NEXT: [[RES_6:%.*]] = xor i1 [[RES_5]], true
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; CHECK-NEXT: [[RES_7:%.*]] = xor i1 [[RES_6]], [[CMP_DST_ADD_5_UPPER]]
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; CHECK-NEXT: ret i1 [[RES_7]]
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; CHECK: else:
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; CHECK-NEXT: ret i1 false
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;
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%dst.add.4 = getelementptr inbounds i8, ptr %dst, i64 4
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%pre.dst.lower = icmp uge ptr %dst, %lower
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%pre.dst.upper = icmp ult ptr %dst.add.4, %upper
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%and = and i1 %pre.dst.lower, %pre.dst.upper
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br i1 %and, label %then, label %else
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then:
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%cmp.dst.lower = icmp uge ptr %dst, %lower
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%cmp.dst.upper = icmp ult ptr %dst, %upper
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%res.1 = xor i1 %cmp.dst.lower, %cmp.dst.upper
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%dst.add.3 = getelementptr inbounds i8, ptr %dst, i64 3
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%cmp.dst.add.3.lower = icmp uge ptr %dst.add.3, %lower
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%cmp.dst.add.3.upper = icmp ult ptr %dst.add.3, %upper
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%res.2 = xor i1 %res.1, %cmp.dst.add.3.lower
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%res.3 = xor i1 %res.2, %cmp.dst.add.3.upper
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%cmp.dst.add.4.lower = icmp uge ptr %dst.add.4, %lower
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%cmp.dst.add.4.upper = icmp ult ptr %dst.add.4, %upper
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%res.4 = xor i1 %res.3, %cmp.dst.add.4.lower
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%res.5 = xor i1 %res.4, %cmp.dst.add.4.upper
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%dst.add.5 = getelementptr inbounds i8, ptr %dst, i64 5
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%cmp.dst.add.5.lower = icmp uge ptr %dst.add.5, %lower
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%cmp.dst.add.5.upper = icmp ult ptr %dst.add.5, %upper
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%res.6 = xor i1 %res.5, %cmp.dst.add.5.lower
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%res.7 = xor i1 %res.6, %cmp.dst.add.5.upper
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ret i1 %res.7
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else:
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ret i1 false
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}
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define i1 @gep_constant_negative_index(ptr %dst, ptr %lower, ptr %upper) {
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; CHECK-LABEL: @gep_constant_negative_index(
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; CHECK-NEXT: [[DST_SUB_4:%.*]] = getelementptr inbounds i8, ptr [[DST:%.*]], i64 -4
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; CHECK-NEXT: [[PRE_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER:%.*]]
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; CHECK-NEXT: [[PRE_DST_UPPER:%.*]] = icmp ult ptr [[DST_SUB_4]], [[UPPER:%.*]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 [[PRE_DST_LOWER]], [[PRE_DST_UPPER]]
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; CHECK-NEXT: br i1 [[AND]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[CMP_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_UPPER:%.*]] = icmp ult ptr [[DST]], [[UPPER]]
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; CHECK-NEXT: [[RES_1:%.*]] = xor i1 true, [[CMP_DST_UPPER]]
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; CHECK-NEXT: [[DST_SUB_3:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -3
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; CHECK-NEXT: [[CMP_DST_SUB_3_LOWER:%.*]] = icmp uge ptr [[DST_SUB_3]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_SUB_3_UPPER:%.*]] = icmp ult ptr [[DST_SUB_3]], [[UPPER]]
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; CHECK-NEXT: [[RES_2:%.*]] = xor i1 [[RES_1]], [[CMP_DST_SUB_3_LOWER]]
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; CHECK-NEXT: [[RES_3:%.*]] = xor i1 [[RES_2]], [[CMP_DST_SUB_3_UPPER]]
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; CHECK-NEXT: [[CMP_DST_SUB_4_LOWER:%.*]] = icmp uge ptr [[DST_SUB_4]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_SUB_4_UPPER:%.*]] = icmp ult ptr [[DST_SUB_4]], [[UPPER]]
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; CHECK-NEXT: [[RES_4:%.*]] = xor i1 [[RES_3]], [[CMP_DST_SUB_4_LOWER]]
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; CHECK-NEXT: [[RES_5:%.*]] = xor i1 [[RES_4]], true
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; CHECK-NEXT: [[DST_SUB_5:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -5
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; CHECK-NEXT: [[CMP_DST_SUB_5_LOWER:%.*]] = icmp uge ptr [[DST_SUB_5]], [[LOWER]]
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; CHECK-NEXT: [[CMP_DST_SUB_5_UPPER:%.*]] = icmp ult ptr [[DST_SUB_5]], [[UPPER]]
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; CHECK-NEXT: [[RES_6:%.*]] = xor i1 [[RES_5]], [[CMP_DST_SUB_5_LOWER]]
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; CHECK-NEXT: [[RES_7:%.*]] = xor i1 [[RES_6]], true
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; CHECK-NEXT: ret i1 [[RES_7]]
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; CHECK: else:
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; CHECK-NEXT: [[ELSE_CMP_DST_LOWER:%.*]] = icmp uge ptr [[DST]], [[LOWER]]
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; CHECK-NEXT: [[ELSE_CMP_DST_UPPER:%.*]] = icmp ult ptr [[DST]], [[UPPER]]
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; CHECK-NEXT: [[ELSE_RES_1:%.*]] = xor i1 [[ELSE_CMP_DST_LOWER]], [[ELSE_CMP_DST_UPPER]]
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; CHECK-NEXT: [[ELSE_DST_SUB_3:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -3
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; CHECK-NEXT: [[ELSE_CMP_DST_SUB_3_LOWER:%.*]] = icmp uge ptr [[ELSE_DST_SUB_3]], [[LOWER]]
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; CHECK-NEXT: [[ELSE_CMP_DST_SUB_3_UPPER:%.*]] = icmp ult ptr [[ELSE_DST_SUB_3]], [[UPPER]]
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; CHECK-NEXT: [[ELSE_RES_2:%.*]] = xor i1 [[ELSE_RES_1]], [[ELSE_CMP_DST_SUB_3_LOWER]]
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; CHECK-NEXT: [[ELSE_RES_3:%.*]] = xor i1 [[ELSE_RES_2]], [[ELSE_CMP_DST_SUB_3_UPPER]]
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; CHECK-NEXT: [[ELSE_CMP_DST_SUB_4_LOWER:%.*]] = icmp uge ptr [[DST_SUB_4]], [[LOWER]]
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; CHECK-NEXT: [[ELSE_CMP_DST_SUB_4_UPPER:%.*]] = icmp ult ptr [[DST_SUB_4]], [[UPPER]]
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; CHECK-NEXT: [[ELSE_RES_4:%.*]] = xor i1 [[ELSE_RES_3]], [[ELSE_CMP_DST_SUB_4_LOWER]]
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; CHECK-NEXT: [[ELSE_RES_5:%.*]] = xor i1 [[ELSE_RES_4]], [[ELSE_CMP_DST_SUB_4_UPPER]]
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; CHECK-NEXT: [[ELSE_DST_SUB_5:%.*]] = getelementptr inbounds i8, ptr [[DST]], i64 -5
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; CHECK-NEXT: [[ELSE_CMP_DST_SUB_5_LOWER:%.*]] = icmp uge ptr [[ELSE_DST_SUB_5]], [[LOWER]]
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; CHECK-NEXT: [[ELSE_CMP_DST_SUB_5_UPPER:%.*]] = icmp ult ptr [[ELSE_DST_SUB_5]], [[UPPER]]
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; CHECK-NEXT: [[ELSE_RES_6:%.*]] = xor i1 [[ELSE_RES_5]], [[ELSE_CMP_DST_SUB_5_LOWER]]
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; CHECK-NEXT: [[ELSE_RES_7:%.*]] = xor i1 [[ELSE_RES_6]], [[ELSE_CMP_DST_SUB_5_UPPER]]
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; CHECK-NEXT: ret i1 [[ELSE_RES_7]]
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;
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%dst.sub.4 = getelementptr inbounds i8, ptr %dst, i64 -4
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%pre.dst.lower = icmp uge ptr %dst, %lower
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%pre.dst.upper = icmp ult ptr %dst.sub.4, %upper
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%and = and i1 %pre.dst.lower, %pre.dst.upper
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br i1 %and, label %then, label %else
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then:
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%cmp.dst.lower = icmp uge ptr %dst, %lower
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%cmp.dst.upper = icmp ult ptr %dst, %upper
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%res.1 = xor i1 %cmp.dst.lower, %cmp.dst.upper
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%dst.sub.3 = getelementptr inbounds i8, ptr %dst, i64 -3
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%cmp.dst.sub.3.lower = icmp uge ptr %dst.sub.3, %lower
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%cmp.dst.sub.3.upper = icmp ult ptr %dst.sub.3, %upper
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%res.2 = xor i1 %res.1, %cmp.dst.sub.3.lower
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%res.3 = xor i1 %res.2, %cmp.dst.sub.3.upper
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%cmp.dst.sub.4.lower = icmp uge ptr %dst.sub.4, %lower
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%cmp.dst.sub.4.upper = icmp ult ptr %dst.sub.4, %upper
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%res.4 = xor i1 %res.3, %cmp.dst.sub.4.lower
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%res.5 = xor i1 %res.4, %cmp.dst.sub.4.upper
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%dst.sub.5 = getelementptr inbounds i8, ptr %dst, i64 -5
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%cmp.dst.sub.5.lower = icmp uge ptr %dst.sub.5, %lower
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%cmp.dst.sub.5.upper = icmp ult ptr %dst.sub.5, %upper
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%res.6 = xor i1 %res.5, %cmp.dst.sub.5.lower
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%res.7 = xor i1 %res.6, %cmp.dst.sub.5.upper
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ret i1 %res.7
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else:
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%else.cmp.dst.lower = icmp uge ptr %dst, %lower
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%else.cmp.dst.upper = icmp ult ptr %dst, %upper
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%else.res.1 = xor i1 %else.cmp.dst.lower, %else.cmp.dst.upper
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%else.dst.sub.3 = getelementptr inbounds i8, ptr %dst, i64 -3
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%else.cmp.dst.sub.3.lower = icmp uge ptr %else.dst.sub.3, %lower
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%else.cmp.dst.sub.3.upper = icmp ult ptr %else.dst.sub.3, %upper
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%else.res.2 = xor i1 %else.res.1, %else.cmp.dst.sub.3.lower
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%else.res.3 = xor i1 %else.res.2, %else.cmp.dst.sub.3.upper
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%else.cmp.dst.sub.4.lower = icmp uge ptr %dst.sub.4, %lower
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%else.cmp.dst.sub.4.upper = icmp ult ptr %dst.sub.4, %upper
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%else.res.4 = xor i1 %else.res.3, %else.cmp.dst.sub.4.lower
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%else.res.5 = xor i1 %else.res.4, %else.cmp.dst.sub.4.upper
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%else.dst.sub.5 = getelementptr inbounds i8, ptr %dst, i64 -5
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%else.cmp.dst.sub.5.lower = icmp uge ptr %else.dst.sub.5, %lower
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%else.cmp.dst.sub.5.upper = icmp ult ptr %else.dst.sub.5, %upper
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%else.res.6 = xor i1 %else.res.5, %else.cmp.dst.sub.5.lower
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%else.res.7 = xor i1 %else.res.6, %else.cmp.dst.sub.5.upper
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ret i1 %else.res.7
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}
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define i4 @ptr_N_signed_positive_explicit_check_constant_step(ptr %src, ptr %lower, ptr %upper, i16 %N) {
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; CHECK-LABEL: @ptr_N_signed_positive_explicit_check_constant_step(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[N_POS:%.*]] = icmp sge i16 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[N_POS]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
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; CHECK: entry.1:
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; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N]]
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; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
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; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
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; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
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; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
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; CHECK: trap.bb:
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; CHECK-NEXT: ret i4 2
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; CHECK: step.check:
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; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 1, [[N]]
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; CHECK-NEXT: br i1 [[STEP_ULT_N]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
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; CHECK: ptr.check:
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; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 1
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; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
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; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
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; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, false
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; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i4 3
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;
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entry:
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%N.pos = icmp sge i16 %N, 0
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br i1 %N.pos, label %entry.1, label %trap.bb
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entry.1:
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%src.end = getelementptr inbounds i8, ptr %src, i16 %N
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%cmp.src.start = icmp ult ptr %src, %lower
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%cmp.src.end = icmp uge ptr %src.end, %upper
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%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
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br i1 %or.precond.0, label %trap.bb, label %step.check
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trap.bb:
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ret i4 2
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step.check:
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%step.ult.N = icmp ult i16 1, %N
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br i1 %step.ult.N, label %ptr.check, label %exit
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ptr.check:
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%src.step = getelementptr inbounds i8, ptr %src, i16 1
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%cmp.step.start = icmp ult ptr %src.step, %lower
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%cmp.step.end = icmp uge ptr %src.step, %upper
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%or.check = or i1 %cmp.step.start, %cmp.step.end
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br i1 %or.check, label %trap.bb, label %exit
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exit:
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ret i4 3
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}
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; Same as ptr_N_signed_positive_explicit_check_constant_step, but without inbounds.
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define i4 @ptr_N_signed_positive_explicit_check_constant_step_no_inbonds(ptr %src, ptr %lower, ptr %upper, i16 %N) {
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; CHECK-LABEL: @ptr_N_signed_positive_explicit_check_constant_step_no_inbonds(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[N_POS:%.*]] = icmp sge i16 [[N:%.*]], 0
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; CHECK-NEXT: br i1 [[N_POS]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
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; CHECK: entry.1:
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; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr i8, ptr [[SRC:%.*]], i16 [[N]]
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; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
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; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
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; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
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; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
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; CHECK: trap.bb:
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; CHECK-NEXT: ret i4 2
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; CHECK: step.check:
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; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 1, [[N]]
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; CHECK-NEXT: br i1 [[STEP_ULT_N]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
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; CHECK: ptr.check:
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; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr i8, ptr [[SRC]], i16 1
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; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
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; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
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; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
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; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i4 3
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;
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entry:
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%N.pos = icmp sge i16 %N, 0
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br i1 %N.pos, label %entry.1, label %trap.bb
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entry.1:
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%src.end = getelementptr i8, ptr %src, i16 %N
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%cmp.src.start = icmp ult ptr %src, %lower
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%cmp.src.end = icmp uge ptr %src.end, %upper
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%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
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br i1 %or.precond.0, label %trap.bb, label %step.check
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trap.bb:
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ret i4 2
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step.check:
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%step.ult.N = icmp ult i16 1, %N
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br i1 %step.ult.N, label %ptr.check, label %exit
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ptr.check:
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%src.step = getelementptr i8, ptr %src, i16 1
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%cmp.step.start = icmp ult ptr %src.step, %lower
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%cmp.step.end = icmp uge ptr %src.step, %upper
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%or.check = or i1 %cmp.step.start, %cmp.step.end
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br i1 %or.check, label %trap.bb, label %exit
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exit:
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ret i4 3
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}
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define i4 @ptr_N_and_step_signed_positive_explicit_check_constant_step(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
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; CHECK-LABEL: @ptr_N_and_step_signed_positive_explicit_check_constant_step(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[N_POS:%.*]] = icmp sge i16 [[N:%.*]], 0
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; CHECK-NEXT: [[STEP_POS:%.*]] = icmp sge i16 [[STEP:%.*]], 0
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; CHECK-NEXT: [[AND_1:%.*]] = and i1 [[N_POS]], [[STEP_POS]]
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; CHECK-NEXT: br i1 [[AND_1]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
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; CHECK: entry.1:
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; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N]]
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; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
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; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
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; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
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; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
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; CHECK: trap.bb:
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; CHECK-NEXT: ret i4 2
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; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_UGE_0:%.*]] = icmp uge i16 [[STEP]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_2:%.*]] = and i1 true, [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_2]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 1
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, false
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%N.pos = icmp sge i16 %N, 0
|
|
%step.pos = icmp sge i16 %step, 0
|
|
%and.1 = and i1 %N.pos, %step.pos
|
|
br i1 %and.1, label %entry.1, label %trap.bb
|
|
|
|
entry.1:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
br i1 %or.precond.0, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.uge.0 = icmp uge i16 %step, 0
|
|
%step.ult.N = icmp ult i16 %step, %N
|
|
%and.2 = and i1 %step.uge.0, %step.ult.N
|
|
br i1 %and.2, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i16 1
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|
|
|
|
define i4 @ptr_N_and_step_signed_positive_unsigned_checks_only(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
|
|
; CHECK-LABEL: @ptr_N_and_step_signed_positive_unsigned_checks_only(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
|
|
; CHECK-NEXT: [[NO_OVERFLOW:%.*]] = icmp ule ptr [[SRC]], [[SRC_END]]
|
|
; CHECK-NEXT: br i1 [[NO_OVERFLOW]], label [[ENTRY_1:%.*]], label [[TRAP_BB:%.*]]
|
|
; CHECK: entry.1:
|
|
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
|
|
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
|
|
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB]], label [[STEP_CHECK:%.*]]
|
|
; CHECK: trap.bb:
|
|
; CHECK-NEXT: ret i4 2
|
|
; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_UGE_0:%.*]] = icmp uge i16 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_2:%.*]] = and i1 [[STEP_UGE_0]], [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_2]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 1
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, [[CMP_STEP_END]]
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
|
|
%no.overflow = icmp ule ptr %src, %src.end
|
|
br i1 %no.overflow, label %entry.1, label %trap.bb
|
|
|
|
entry.1:
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
br i1 %or.precond.0, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.uge.0 = icmp uge i16 %step, 0
|
|
%step.ult.N = icmp ult i16 %step, %N
|
|
%and.2 = and i1 %step.uge.0, %step.ult.N
|
|
br i1 %and.2, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i16 1
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|
|
|
|
define i4 @ptr_N_signed_positive(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
|
|
; CHECK-LABEL: @ptr_N_signed_positive(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
|
|
; CHECK-NEXT: [[N_NEG:%.*]] = icmp slt i16 [[N]], 0
|
|
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
|
|
; CHECK-NEXT: [[OR_PRECOND_1:%.*]] = or i1 [[OR_PRECOND_0]], [[N_NEG]]
|
|
; CHECK-NEXT: br i1 [[OR_PRECOND_1]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
|
|
; CHECK: trap.bb:
|
|
; CHECK-NEXT: ret i4 2
|
|
; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i16 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 [[STEP]]
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 false, false
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%N.neg = icmp slt i16 %N, 0
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
%or.precond.1 = or i1 %or.precond.0, %N.neg
|
|
br i1 %or.precond.1, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.pos = icmp uge i16 %step, 0
|
|
%step.ult.N = icmp ult i16 %step, %N
|
|
%and.step = and i1 %step.pos, %step.ult.N
|
|
br i1 %and.step, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i16 %step
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|
|
|
|
define i4 @ptr_N_could_be_negative(ptr %src, ptr %lower, ptr %upper, i8 %N, i8 %step) {
|
|
; CHECK-LABEL: @ptr_N_could_be_negative(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i8 [[N:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
|
|
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
|
|
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
|
|
; CHECK: trap.bb:
|
|
; CHECK-NEXT: ret i4 2
|
|
; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i8 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i8 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i8 [[STEP]]
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i8 %N
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
br i1 %or.precond.0, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.pos = icmp uge i8 %step, 0
|
|
%step.ult.N = icmp ult i8 %step, %N
|
|
%and.step = and i1 %step.pos, %step.ult.N
|
|
br i1 %and.step, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i8 %step
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|
|
|
|
define i4 @ptr_src_uge_end(ptr %src, ptr %lower, ptr %upper, i8 %N, i8 %step) {
|
|
; CHECK-LABEL: @ptr_src_uge_end(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i8 [[N:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
|
|
; CHECK-NEXT: [[CMP_OVERFLOW:%.*]] = icmp ugt ptr [[SRC]], [[SRC_END]]
|
|
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
|
|
; CHECK-NEXT: [[OR_PRECOND_1:%.*]] = or i1 [[OR_PRECOND_0]], [[CMP_OVERFLOW]]
|
|
; CHECK-NEXT: br i1 [[OR_PRECOND_1]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
|
|
; CHECK: trap.bb:
|
|
; CHECK-NEXT: ret i4 2
|
|
; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i8 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i8 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i8 [[STEP]]
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i8 %N
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%cmp.overflow = icmp ugt ptr %src, %src.end
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
%or.precond.1 = or i1 %or.precond.0, %cmp.overflow
|
|
br i1 %or.precond.1, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.pos = icmp uge i8 %step, 0
|
|
%step.ult.N = icmp ult i8 %step, %N
|
|
%and.step = and i1 %step.pos, %step.ult.N
|
|
br i1 %and.step, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i8 %step
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|
|
|
|
; N might be negative, meaning %src.end could be < %src! Cannot remove checks!
|
|
define i4 @ptr_N_unsigned_positive(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
|
|
; CHECK-LABEL: @ptr_N_unsigned_positive(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
|
|
; CHECK-NEXT: [[N_NEG:%.*]] = icmp ult i16 [[N]], 0
|
|
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
|
|
; CHECK-NEXT: [[OR_PRECOND_1:%.*]] = or i1 [[OR_PRECOND_0]], [[N_NEG]]
|
|
; CHECK-NEXT: br i1 [[OR_PRECOND_1]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
|
|
; CHECK: trap.bb:
|
|
; CHECK-NEXT: ret i4 2
|
|
; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i16 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 [[STEP]]
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%N.neg = icmp ult i16 %N, 0
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
%or.precond.1 = or i1 %or.precond.0, %N.neg
|
|
br i1 %or.precond.1, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.pos = icmp uge i16 %step, 0
|
|
%step.ult.N = icmp ult i16 %step, %N
|
|
%and.step = and i1 %step.pos, %step.ult.N
|
|
br i1 %and.step, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i16 %step
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|
|
|
|
define i4 @ptr_N_signed_positive_assume(ptr %src, ptr %lower, ptr %upper, i16 %N, i16 %step) {
|
|
; CHECK-LABEL: @ptr_N_signed_positive_assume(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[SRC_END:%.*]] = getelementptr inbounds i8, ptr [[SRC:%.*]], i16 [[N:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_START:%.*]] = icmp ult ptr [[SRC]], [[LOWER:%.*]]
|
|
; CHECK-NEXT: [[CMP_SRC_END:%.*]] = icmp uge ptr [[SRC_END]], [[UPPER:%.*]]
|
|
; CHECK-NEXT: [[N_NEG:%.*]] = icmp slt i16 [[N]], 0
|
|
; CHECK-NEXT: call void @llvm.assume(i1 [[N_NEG]])
|
|
; CHECK-NEXT: [[OR_PRECOND_0:%.*]] = or i1 [[CMP_SRC_START]], [[CMP_SRC_END]]
|
|
; CHECK-NEXT: br i1 [[OR_PRECOND_0]], label [[TRAP_BB:%.*]], label [[STEP_CHECK:%.*]]
|
|
; CHECK: trap.bb:
|
|
; CHECK-NEXT: ret i4 2
|
|
; CHECK: step.check:
|
|
; CHECK-NEXT: [[STEP_POS:%.*]] = icmp uge i16 [[STEP:%.*]], 0
|
|
; CHECK-NEXT: [[STEP_ULT_N:%.*]] = icmp ult i16 [[STEP]], [[N]]
|
|
; CHECK-NEXT: [[AND_STEP:%.*]] = and i1 [[STEP_POS]], [[STEP_ULT_N]]
|
|
; CHECK-NEXT: br i1 [[AND_STEP]], label [[PTR_CHECK:%.*]], label [[EXIT:%.*]]
|
|
; CHECK: ptr.check:
|
|
; CHECK-NEXT: [[SRC_STEP:%.*]] = getelementptr inbounds i8, ptr [[SRC]], i16 [[STEP]]
|
|
; CHECK-NEXT: [[CMP_STEP_START:%.*]] = icmp ult ptr [[SRC_STEP]], [[LOWER]]
|
|
; CHECK-NEXT: [[CMP_STEP_END:%.*]] = icmp uge ptr [[SRC_STEP]], [[UPPER]]
|
|
; CHECK-NEXT: [[OR_CHECK:%.*]] = or i1 [[CMP_STEP_START]], [[CMP_STEP_END]]
|
|
; CHECK-NEXT: br i1 [[OR_CHECK]], label [[TRAP_BB]], label [[EXIT]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret i4 3
|
|
;
|
|
entry:
|
|
%src.end = getelementptr inbounds i8, ptr %src, i16 %N
|
|
%cmp.src.start = icmp ult ptr %src, %lower
|
|
%cmp.src.end = icmp uge ptr %src.end, %upper
|
|
%N.neg = icmp slt i16 %N, 0
|
|
call void @llvm.assume(i1 %N.neg)
|
|
%or.precond.0 = or i1 %cmp.src.start, %cmp.src.end
|
|
br i1 %or.precond.0, label %trap.bb, label %step.check
|
|
|
|
trap.bb:
|
|
ret i4 2
|
|
|
|
step.check:
|
|
%step.pos = icmp uge i16 %step, 0
|
|
%step.ult.N = icmp ult i16 %step, %N
|
|
%and.step = and i1 %step.pos, %step.ult.N
|
|
br i1 %and.step, label %ptr.check, label %exit
|
|
|
|
ptr.check:
|
|
%src.step = getelementptr inbounds i8, ptr %src, i16 %step
|
|
%cmp.step.start = icmp ult ptr %src.step, %lower
|
|
%cmp.step.end = icmp uge ptr %src.step, %upper
|
|
%or.check = or i1 %cmp.step.start, %cmp.step.end
|
|
br i1 %or.check, label %trap.bb, label %exit
|
|
|
|
exit:
|
|
ret i4 3
|
|
}
|