110 lines
2.7 KiB
LLVM
110 lines
2.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=ipsccp -S < %s | FileCheck %s
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define float @sitofp_and(i8 %x) {
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; CHECK-LABEL: @sitofp_and(
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; CHECK-NEXT: [[PX:%.*]] = and i8 [[X:%.*]], 127
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; CHECK-NEXT: [[R:%.*]] = sitofp i8 [[PX]] to float
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; CHECK-NEXT: ret float [[R]]
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;
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%px = and i8 %x, 127
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%r = sitofp i8 %px to float
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ret float %r
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}
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define half @sitofp_const(i8 %x) {
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; CHECK-LABEL: @sitofp_const(
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; CHECK-NEXT: ret half 0xH5140
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;
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%r = sitofp i8 42 to half
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ret half %r
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}
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define double @sitofp_zext(i7 %x) {
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; CHECK-LABEL: @sitofp_zext(
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; CHECK-NEXT: [[PX:%.*]] = zext i7 [[X:%.*]] to i8
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; CHECK-NEXT: [[R:%.*]] = sitofp i8 [[PX]] to double
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; CHECK-NEXT: ret double [[R]]
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;
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%px = zext i7 %x to i8
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%r = sitofp i8 %px to double
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ret double %r
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}
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; negative test
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define double @sitofp_not_nonneg(i7 %x) {
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; CHECK-LABEL: @sitofp_not_nonneg(
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; CHECK-NEXT: [[PX:%.*]] = sext i7 [[X:%.*]] to i8
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; CHECK-NEXT: [[R:%.*]] = sitofp i8 [[PX]] to double
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; CHECK-NEXT: ret double [[R]]
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;
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%px = sext i7 %x to i8
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%r = sitofp i8 %px to double
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ret double %r
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}
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; x is known non-negative in t block
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define float @dominating_condition(i32 %x) {
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; CHECK-LABEL: @dominating_condition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp sge i32 [[X:%.*]], 0
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; CHECK-NEXT: br i1 [[CMP]], label [[T:%.*]], label [[F:%.*]]
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; CHECK: t:
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; CHECK-NEXT: [[A:%.*]] = sitofp i32 [[X]] to float
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: f:
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[COND:%.*]] = phi float [ [[A]], [[T]] ], [ 4.200000e+01, [[F]] ]
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; CHECK-NEXT: ret float [[COND]]
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;
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entry:
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%cmp = icmp sge i32 %x, 0
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br i1 %cmp, label %t, label %f
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t:
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%a = sitofp i32 %x to float
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br label %exit
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f:
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br label %exit
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exit:
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%cond = phi float [ %a, %t ], [ 42.0, %f ]
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ret float %cond
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}
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; x is known non-negative in f block
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define float @dominating_condition_alt(i32 %x) {
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; CHECK-LABEL: @dominating_condition_alt(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[X:%.*]], 2000000000
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; CHECK-NEXT: br i1 [[CMP]], label [[T:%.*]], label [[F:%.*]]
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; CHECK: t:
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; CHECK-NEXT: br label [[EXIT:%.*]]
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; CHECK: f:
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; CHECK-NEXT: [[A:%.*]] = sitofp i32 [[X]] to float
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[COND:%.*]] = phi float [ -4.200000e+01, [[T]] ], [ [[A]], [[F]] ]
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; CHECK-NEXT: ret float [[COND]]
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;
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entry:
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%cmp = icmp ugt i32 %x, 2000000000
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br i1 %cmp, label %t, label %f
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t:
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br label %exit
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f:
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%a = sitofp i32 %x to float
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br label %exit
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exit:
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%cond = phi float [ -42.0, %t ], [ %a, %f ]
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ret float %cond
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}
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