diff options
Diffstat (limited to 'llvm/test/Transforms/Reassociate/fast-SubReassociate.ll')
-rw-r--r-- | llvm/test/Transforms/Reassociate/fast-SubReassociate.ll | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/llvm/test/Transforms/Reassociate/fast-SubReassociate.ll b/llvm/test/Transforms/Reassociate/fast-SubReassociate.ll deleted file mode 100644 index 9b2b55746db..00000000000 --- a/llvm/test/Transforms/Reassociate/fast-SubReassociate.ll +++ /dev/null @@ -1,119 +0,0 @@ -; RUN: opt < %s -reassociate -constprop -instcombine -S | FileCheck %s - -define float @test1(float %A, float %B) { -; CHECK-LABEL: @test1( -; CHECK-NEXT: [[W:%.*]] = fadd float %B, 5.000000e+00 -; CHECK-NEXT: [[X:%.*]] = fadd float %A, -7.000000e+00 -; CHECK-NEXT: [[Y:%.*]] = fsub float [[X]], [[W]] -; CHECK-NEXT: [[Z:%.*]] = fadd float [[Y]], 1.200000e+01 -; CHECK-NEXT: ret float [[Z]] -; - %W = fadd float 5.0, %B - %X = fadd float -7.0, %A - %Y = fsub float %X, %W - %Z = fadd float %Y, 12.0 - ret float %Z -} - -; With sub reassociation, constant folding can eliminate all of the constants. -define float @test2(float %A, float %B) { -; CHECK-LABEL: @test2( -; CHECK-NEXT: [[Z:%.*]] = fsub fast float %A, %B -; CHECK-NEXT: ret float [[Z]] -; - %W = fadd fast float %B, 5.000000e+00 - %X = fadd fast float %A, -7.000000e+00 - %Y = fsub fast float %X, %W - %Z = fadd fast float %Y, 1.200000e+01 - ret float %Z -} - -; Check again using minimal subset of FMF. -; Both 'reassoc' and 'nsz' are required. -define float @test2_minimal(float %A, float %B) { -; CHECK-LABEL: @test2_minimal( -; CHECK-NEXT: [[Z:%.*]] = fsub reassoc nsz float %A, %B -; CHECK-NEXT: ret float [[Z]] -; - %W = fadd reassoc nsz float %B, 5.000000e+00 - %X = fadd reassoc nsz float %A, -7.000000e+00 - %Y = fsub reassoc nsz float %X, %W - %Z = fadd reassoc nsz float %Y, 1.200000e+01 - ret float %Z -} - -; Verify the fold is not done with only 'reassoc' ('nsz' is required). -define float @test2_reassoc(float %A, float %B) { -; CHECK-LABEL: @test2_reassoc( -; CHECK-NEXT: [[W:%.*]] = fadd reassoc float %B, 5.000000e+00 -; CHECK-NEXT: [[X:%.*]] = fadd reassoc float %A, -7.000000e+00 -; CHECK-NEXT: [[Y:%.*]] = fsub reassoc float [[X]], [[W]] -; CHECK-NEXT: [[Z:%.*]] = fadd reassoc float [[Y]], 1.200000e+01 -; CHECK-NEXT: ret float [[Z]] -; - %W = fadd reassoc float %B, 5.000000e+00 - %X = fadd reassoc float %A, -7.000000e+00 - %Y = fsub reassoc float %X, %W - %Z = fadd reassoc float %Y, 1.200000e+01 - ret float %Z -} - -define float @test3(float %A, float %B, float %C, float %D) { -; CHECK-LABEL: @test3( -; CHECK-NEXT: [[M:%.*]] = fadd float %A, 1.200000e+01 -; CHECK-NEXT: [[N:%.*]] = fadd float [[M]], %B -; CHECK-NEXT: [[O:%.*]] = fadd float [[N]], %C -; CHECK-NEXT: [[P:%.*]] = fsub float %D, [[O]] -; CHECK-NEXT: [[Q:%.*]] = fadd float [[P]], 1.200000e+01 -; CHECK-NEXT: ret float [[Q]] -; - %M = fadd float %A, 1.200000e+01 - %N = fadd float %M, %B - %O = fadd float %N, %C - %P = fsub float %D, %O - %Q = fadd float %P, 1.200000e+01 - ret float %Q -} - -; With sub reassociation, constant folding can eliminate the two 12 constants. - -define float @test4(float %A, float %B, float %C, float %D) { -; FIXME: InstCombine should be able to get us to the following: -; %sum = fadd fast float %B, %A -; %sum1 = fadd fast float %sum, %C -; %Q = fsub fast float %D, %sum1 -; ret i32 %Q -; CHECK-LABEL: @test4( -; CHECK-NEXT: [[B_NEG:%.*]] = fsub fast float -0.000000e+00, %B -; CHECK-NEXT: [[O_NEG:%.*]] = fsub fast float [[B_NEG]], %A -; CHECK-NEXT: [[P:%.*]] = fsub fast float [[O_NEG]], %C -; CHECK-NEXT: [[Q:%.*]] = fadd fast float [[P]], %D -; CHECK-NEXT: ret float [[Q]] -; - %M = fadd fast float 1.200000e+01, %A - %N = fadd fast float %M, %B - %O = fadd fast float %N, %C - %P = fsub fast float %D, %O - %Q = fadd fast float 1.200000e+01, %P - ret float %Q -} - -; Check again using minimal subset of FMF. - -define float @test4_reassoc(float %A, float %B, float %C, float %D) { -; CHECK-LABEL: @test4_reassoc( -; CHECK-NEXT: [[M:%.*]] = fadd reassoc float %A, 1.200000e+01 -; CHECK-NEXT: [[N:%.*]] = fadd reassoc float [[M]], %B -; CHECK-NEXT: [[O:%.*]] = fadd reassoc float [[N]], %C -; CHECK-NEXT: [[P:%.*]] = fsub reassoc float %D, [[O]] -; CHECK-NEXT: [[Q:%.*]] = fadd reassoc float [[P]], 1.200000e+01 -; CHECK-NEXT: ret float [[Q]] -; - %M = fadd reassoc float 1.200000e+01, %A - %N = fadd reassoc float %M, %B - %O = fadd reassoc float %N, %C - %P = fsub reassoc float %D, %O - %Q = fadd reassoc float 1.200000e+01, %P - ret float %Q -} - |