diff options
| -rw-r--r-- | llvm/test/Transforms/InstCombine/select_arithmetic.ll | 62 |
1 files changed, 36 insertions, 26 deletions
diff --git a/llvm/test/Transforms/InstCombine/select_arithmetic.ll b/llvm/test/Transforms/InstCombine/select_arithmetic.ll index 8fde7c0807e..642fa6ccc85 100644 --- a/llvm/test/Transforms/InstCombine/select_arithmetic.ll +++ b/llvm/test/Transforms/InstCombine/select_arithmetic.ll @@ -1,21 +1,28 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -instcombine -S | FileCheck %s target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" ; Tests folding constants from two similar selects that feed a add + define float @test1a(i1 zeroext %arg) #0 { +; CHECK-LABEL: @test1a( +; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG:%.*]], float 6.000000e+00, float 1.500000e+01 +; CHECK-NEXT: ret float [[TMP2]] +; %tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00 %tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00 %tmp2 = fadd float %tmp, %tmp1 ret float %tmp2 -; CHECK-LABEL: @test1a( -; CHECK: %tmp2 = select i1 %arg, float 6.000000e+00, float 1.500000e+01 -; CHECK-NOT: fadd -; CHECK: ret float %tmp2 } ; Tests folding multiple expression constants from similar selects that feed a adds + define float @test1b(i1 zeroext %arg) #0 { +; CHECK-LABEL: @test1b( +; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[ARG:%.*]], float 7.250000e+00, float 2.800000e+01 +; CHECK-NEXT: ret float [[TMP5]] +; %tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00 %tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00 %tmp2 = select i1 %arg, float 2.500000e-01, float 4.000000e+00 @@ -23,62 +30,65 @@ define float @test1b(i1 zeroext %arg) #0 { %tmp4 = fadd float %tmp2, %tmp1 %tmp5 = fadd float %tmp4, %tmp3 ret float %tmp5 -; CHECK-LABEL: @test1b( -; CHECK: %tmp5 = select i1 %arg, float 7.250000e+00, float 2.800000e+01 -; CHECK-NOT: fadd -; CHECK: ret float %tmp5 } ; Tests folding constants from two similar selects that feed a sub + define float @test2(i1 zeroext %arg) #0 { +; CHECK-LABEL: @test2( +; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG:%.*]], float 4.000000e+00, float -3.000000e+00 +; CHECK-NEXT: ret float [[TMP2]] +; %tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00 %tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00 %tmp2 = fsub float %tmp, %tmp1 ret float %tmp2 -; CHECK-LABEL: @test2( -; CHECK: %tmp2 = select i1 %arg, float 4.000000e+00, float -3.000000e+00 -; CHECK-NOT: fsub -; CHECK: ret float %tmp2 } ; Tests folding constants from two similar selects that feed a mul + define float @test3(i1 zeroext %arg) #0 { +; CHECK-LABEL: @test3( +; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG:%.*]], float 5.000000e+00, float 5.400000e+01 +; CHECK-NEXT: ret float [[TMP2]] +; %tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00 %tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00 %tmp2 = fmul float %tmp, %tmp1 ret float %tmp2 -; CHECK-LABEL: @test3( -; CHECK: %tmp2 = select i1 %arg, float 5.000000e+00, float 5.400000e+01 -; CHECK-NOT: fmul -; CHECK: ret float %tmp2 } declare void @use_float(float) ; Tests folding constants if the selects have multiple uses but ; we can fold away the binary op with a select. + define float @test4(i1 zeroext %arg) #0 { +; CHECK-LABEL: @test4( +; CHECK-NEXT: [[TMP:%.*]] = select i1 [[ARG:%.*]], float 5.000000e+00, float 6.000000e+00 +; CHECK-NEXT: [[TMP2:%.*]] = select i1 [[ARG]], float 5.000000e+00, float 5.400000e+01 +; CHECK-NEXT: call void @use_float(float [[TMP]]) +; CHECK-NEXT: ret float [[TMP2]] +; %tmp = select i1 %arg, float 5.000000e+00, float 6.000000e+00 %tmp1 = select i1 %arg, float 1.000000e+00, float 9.000000e+00 %tmp2 = fmul float %tmp, %tmp1 call void @use_float(float %tmp) ret float %tmp2 -; CHECK-LABEL: @test4( -; CHECK: select i1 %arg, float 5.000000e+00, float 6.000000e+00 -; CHECK-NEXT: select i1 %arg, float 5.000000e+00, float 5.400000e+01 -; CHECK-NEXT: call void @use_float(float %tmp) -; CHECK: ret float %tmp2 } ; Tests not folding constants if we cannot fold away any of the selects. + define float @test5(i1 zeroext %arg, float %div) { +; CHECK-LABEL: @test5( +; CHECK-NEXT: [[TMP:%.*]] = select i1 [[ARG:%.*]], float [[DIV:%.*]], float 5.000000e+00 +; CHECK-NEXT: [[MUL:%.*]] = fmul contract float [[TMP]], [[TMP]] +; CHECK-NEXT: call void @use_float(float [[TMP]]) +; CHECK-NEXT: ret float [[MUL]] +; %tmp = select i1 %arg, float %div, float 5.000000e+00 %mul = fmul contract float %tmp, %tmp call void @use_float(float %tmp) ret float %mul -; CHECK-LABEL: @test5( -; CHECK: [[TMP:%.*]] = select i1 %arg, float %div, float 5.000000e+00 -; CHECK-NEXT: [[MUL:%.*]] = fmul contract float [[TMP]], [[TMP]] -; CHECK-NOT: fmul contract float %div, %div -; CHECK: ret float [[MUL]] } + |
