72 lines
1.4 KiB
LLVM
72 lines
1.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -reassociate -S | FileCheck %s
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; Don't produce an instruction that is a no-op because the constant is an identity constant.
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define i32 @add_0(i32 %x) {
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; CHECK-LABEL: @add_0(
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; CHECK-NEXT: ret i32 [[X:%.*]]
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;
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%a1 = add i32 %x, -30
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%a2 = add i32 %a1, 30
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ret i32 %a2
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}
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define i32 @mul_1(i32 %x) {
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; CHECK-LABEL: @mul_1(
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; CHECK-NEXT: ret i32 [[X:%.*]]
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;
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%a1 = mul i32 %x, -1
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%a2 = mul i32 %a1, -1
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ret i32 %a2
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}
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define i8 @and_neg1(i8 %x) {
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; CHECK-LABEL: @and_neg1(
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; CHECK-NEXT: ret i8 [[X:%.*]]
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;
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%a1 = and i8 %x, 255
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%a2 = and i8 %a1, 255
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ret i8 %a2
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}
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define i8 @or_0(i8 %x) {
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; CHECK-LABEL: @or_0(
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; CHECK-NEXT: ret i8 [[X:%.*]]
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;
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%a1 = or i8 %x, 0
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%a2 = or i8 %a1, 0
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ret i8 %a2
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}
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define i8 @xor_0(i8 %x) {
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; CHECK-LABEL: @xor_0(
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; CHECK-NEXT: ret i8 [[X:%.*]]
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;
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%a1 = xor i8 %x, 42
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%a2 = xor i8 %a1, 42
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ret i8 %a2
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}
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; FIXME - the binop identity constant for fadd is -0.0, so this didn't fold.
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define float @fadd_0(float %x) {
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; CHECK-LABEL: @fadd_0(
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; CHECK-NEXT: [[A2:%.*]] = fadd fast float [[X:%.*]], 0.000000e+00
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; CHECK-NEXT: ret float [[A2]]
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;
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%a1 = fadd fast float %x, -30.0
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%a2 = fadd fast float %a1, 30.0
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ret float %a2
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}
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define float @fmul_1(float %x) {
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; CHECK-LABEL: @fmul_1(
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; CHECK-NEXT: ret float [[X:%.*]]
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;
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%a1 = fmul fast float %x, 4.0
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%a2 = fmul fast float %a1, 0.25
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ret float %a2
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}
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