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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='gvn' -S %s | FileCheck %s
define i32 @load_of_ptr_select_can_be_replaced_by_value_select(i32* %ptr, i32* %end) {
; CHECK-LABEL: @load_of_ptr_select_can_be_replaced_by_value_select(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @different_phis_1(i32* %ptr, i32* %end) {
; CHECK-LABEL: @different_phis_1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ null, [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ null, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @different_phi_2(i32* %ptr, i32* %end) {
; CHECK-LABEL: @different_phi_2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[START_PTR]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT:%.*]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %start.ptr, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @different_phis_3(i32* %ptr, i32* %end) {
; CHECK-LABEL: @different_phis_3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ 19, [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
br label %loop
loop:
%l.2 = phi i32 [ 19, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @different_phis_4(i32* %ptr, i32* %end) {
; CHECK-LABEL: @different_phis_4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ 10, [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL:%.*]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ 10, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @load_before_loop_in_different_block(i32* %ptr, i32* %end, i1 %c) {
; CHECK-LABEL: @load_before_loop_in_different_block(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br i1 [[C:%.*]], label [[PH:%.*]], label [[EXIT_2:%.*]]
; CHECK: ph:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[PH]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[PH]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
; CHECK: exit.2:
; CHECK-NEXT: ret i32 0
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br i1 %c, label %ph, label %exit.2
ph:
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %ph ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %ph ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %ph ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
exit.2:
ret i32 0
}
define i32 @selects_use_different_compares(i32* %ptr, i32* %end) {
; CHECK-LABEL: @selects_use_different_compares(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[CMP_2:%.*]] = icmp ult i32 [[L_1]], 10
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_2]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%cmp.2 = icmp ult i32 %l.1, 10
%min.val = select i1 %cmp.2, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @value_select_different_value_1(i32* %ptr, i32* %end) {
; CHECK-LABEL: @value_select_different_value_1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 10
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 10
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @value_select_different_value_2(i32* %ptr, i32* %end, i32* %ptr.2) {
; CHECK-LABEL: @value_select_different_value_2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: [[L_1_PRE:%.*]] = load i32, i32* [[PTR_2:%.*]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1_PRE]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1_PRE]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.2, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_1(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_clobbered_1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: store i32 99, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
store i32 99, i32* %ptr
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_in_loop(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_clobbered_in_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: store i32 99, i32* [[PTR]], align 4
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
store i32 99, i32* %ptr
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_in_loop_2(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_clobbered_in_loop_2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: store i32 99, i32* [[PTR]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
store i32 99, i32* %ptr
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_in_loop_3(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_clobbered_in_loop_3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: store i32 99, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
store i32 99, i32* %ptr.iv
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_in_loop_4(i32* %ptr, i32* %end, i32* %ptr.2) {
; CHECK-LABEL: @pointer_select_clobbered_in_loop_4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: store i32 99, i32* [[PTR_2:%.*]], align 4
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
store i32 99, i32* %ptr.2
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
declare void @may_write()
define i32 @pointer_select_clobbered_by_call_before_loop(i32* %ptr, i32* %end, i32* %ptr.2) {
; CHECK-LABEL: @pointer_select_clobbered_by_call_before_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: call void @may_write()
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
call void @may_write()
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_by_call_in_loop(i32* %ptr, i32* %end, i32* %ptr.2) {
; CHECK-LABEL: @pointer_select_clobbered_by_call_in_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: call void @may_write()
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
call void @may_write()
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_by_call_after_loop(i32* %ptr, i32* %end, i32* %ptr.2) {
; CHECK-LABEL: @pointer_select_clobbered_by_call_after_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: call void @may_write()
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
call void @may_write()
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_clobbered_after_loop(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_clobbered_after_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: store i32 99, i32* [[PTR]], align 4
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
store i32 99, i32* %ptr
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
declare void @may_throw() readonly
define i32 @pointer_select_may_throw_before_loop(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_may_throw_before_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: call void @may_throw()
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
call void @may_throw()
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_may_throw_in_loop(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_may_throw_in_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: call void @may_throw()
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
call void @may_throw()
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
define i32 @pointer_select_may_throw_after_loop(i32* %ptr, i32* %end) {
; CHECK-LABEL: @pointer_select_may_throw_after_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[START_PTR:%.*]] = getelementptr inbounds i32, i32* [[PTR:%.*]], i64 1
; CHECK-NEXT: [[L_2_PRE:%.*]] = load i32, i32* [[PTR]], align 4
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[L_2:%.*]] = phi i32 [ [[L_2_PRE]], [[ENTRY:%.*]] ], [ [[MIN_VAL:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi i32* [ [[START_PTR]], [[ENTRY]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[MIN_PTR:%.*]] = phi i32* [ [[PTR]], [[ENTRY]] ], [ [[MIN_SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[L_1:%.*]] = load i32, i32* [[PTR_IV]], align 4
; CHECK-NEXT: [[CMP_1:%.*]] = icmp ult i32 [[L_1]], [[L_2]]
; CHECK-NEXT: [[MIN_VAL]] = select i1 [[CMP_1]], i32 [[L_1]], i32 [[L_2]]
; CHECK-NEXT: [[MIN_SELECT]] = select i1 [[CMP_1]], i32* [[PTR_IV]], i32* [[MIN_PTR]]
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i32, i32* [[PTR_IV]], i64 1
; CHECK-NEXT: [[EC:%.*]] = icmp eq i32* [[PTR_IV_NEXT]], [[END:%.*]]
; CHECK-NEXT: br i1 [[EC]], label [[EXIT:%.*]], label [[LOOP]]
; CHECK: exit:
; CHECK-NEXT: call void @may_throw()
; CHECK-NEXT: [[RES:%.*]] = load i32, i32* [[MIN_SELECT]], align 4
; CHECK-NEXT: ret i32 [[RES]]
;
entry:
%start.ptr = getelementptr inbounds i32, i32* %ptr, i64 1
%l.2.pre = load i32, i32* %ptr, align 4
br label %loop
loop:
%l.2 = phi i32 [ %l.2.pre, %entry ], [ %min.val, %loop ]
%ptr.iv = phi i32* [ %start.ptr, %entry ], [ %ptr.iv.next, %loop ]
%min.ptr = phi i32* [ %ptr, %entry ], [ %min.select, %loop ]
%l.1 = load i32, i32* %ptr.iv, align 4
%cmp.1 = icmp ult i32 %l.1, %l.2
%min.val = select i1 %cmp.1, i32 %l.1, i32 %l.2
%min.select = select i1 %cmp.1, i32* %ptr.iv, i32* %min.ptr
%ptr.iv.next = getelementptr inbounds i32, i32* %ptr.iv, i64 1
%ec = icmp eq i32* %ptr.iv.next, %end
br i1 %ec, label %exit, label %loop
exit:
call void @may_throw()
%res = load i32, i32* %min.select, align 4
ret i32 %res
}
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