0676acb6fd
Should cover most of the tests for GVN, GVNHoist, GVNSink, GlobalOpt, GlobalSplit, InstCombine, Reassociate, SROA and TailCallElim that had not been updated earlier.
115 lines
3.9 KiB
LLVM
115 lines
3.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=reassociate,instcombine -S | FileCheck %s
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define float @test1(float %A, float %B) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[W:%.*]] = fadd float [[B:%.*]], 5.000000e+00
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; CHECK-NEXT: [[X:%.*]] = fadd float [[A:%.*]], -7.000000e+00
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; CHECK-NEXT: [[Y:%.*]] = fsub float [[X]], [[W]]
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; CHECK-NEXT: [[Z:%.*]] = fadd float [[Y]], 1.200000e+01
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; CHECK-NEXT: ret float [[Z]]
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;
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%W = fadd float 5.0, %B
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%X = fadd float -7.0, %A
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%Y = fsub float %X, %W
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%Z = fadd float %Y, 12.0
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ret float %Z
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}
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; With sub reassociation, constant folding can eliminate all of the constants.
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define float @test2(float %A, float %B) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[Z:%.*]] = fsub fast float [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret float [[Z]]
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;
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%W = fadd fast float %B, 5.000000e+00
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%X = fadd fast float %A, -7.000000e+00
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%Y = fsub fast float %X, %W
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%Z = fadd fast float %Y, 1.200000e+01
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ret float %Z
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}
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; Check again using minimal subset of FMF.
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; Both 'reassoc' and 'nsz' are required.
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define float @test2_minimal(float %A, float %B) {
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; CHECK-LABEL: @test2_minimal(
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; CHECK-NEXT: [[TMP1:%.*]] = fsub reassoc nsz float [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret float [[TMP1]]
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;
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%W = fadd reassoc nsz float %B, 5.000000e+00
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%X = fadd reassoc nsz float %A, -7.000000e+00
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%Y = fsub reassoc nsz float %X, %W
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%Z = fadd reassoc nsz float %Y, 1.200000e+01
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ret float %Z
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}
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; Verify the fold is not done with only 'reassoc' ('nsz' is required).
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define float @test2_reassoc(float %A, float %B) {
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; CHECK-LABEL: @test2_reassoc(
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; CHECK-NEXT: [[W:%.*]] = fadd reassoc float [[B:%.*]], 5.000000e+00
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; CHECK-NEXT: [[X:%.*]] = fadd reassoc float [[A:%.*]], -7.000000e+00
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; CHECK-NEXT: [[Y:%.*]] = fsub reassoc float [[X]], [[W]]
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; CHECK-NEXT: [[Z:%.*]] = fadd reassoc float [[Y]], 1.200000e+01
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; CHECK-NEXT: ret float [[Z]]
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;
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%W = fadd reassoc float %B, 5.000000e+00
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%X = fadd reassoc float %A, -7.000000e+00
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%Y = fsub reassoc float %X, %W
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%Z = fadd reassoc float %Y, 1.200000e+01
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ret float %Z
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}
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define float @test3(float %A, float %B, float %C, float %D) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[M:%.*]] = fadd float [[A:%.*]], 1.200000e+01
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; CHECK-NEXT: [[N:%.*]] = fadd float [[M]], [[B:%.*]]
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; CHECK-NEXT: [[O:%.*]] = fadd float [[N]], [[C:%.*]]
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; CHECK-NEXT: [[P:%.*]] = fsub float [[D:%.*]], [[O]]
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; CHECK-NEXT: [[Q:%.*]] = fadd float [[P]], 1.200000e+01
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; CHECK-NEXT: ret float [[Q]]
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;
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%M = fadd float %A, 1.200000e+01
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%N = fadd float %M, %B
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%O = fadd float %N, %C
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%P = fsub float %D, %O
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%Q = fadd float %P, 1.200000e+01
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ret float %Q
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}
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; With sub reassociation, constant folding can eliminate the two 12 constants.
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define float @test4(float %A, float %B, float %C, float %D) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[TMP1:%.*]] = fadd fast float [[B:%.*]], [[A:%.*]]
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; CHECK-NEXT: [[TMP2:%.*]] = fadd fast float [[TMP1]], [[C:%.*]]
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; CHECK-NEXT: [[Q:%.*]] = fsub fast float [[D:%.*]], [[TMP2]]
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; CHECK-NEXT: ret float [[Q]]
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;
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%M = fadd fast float 1.200000e+01, %A
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%N = fadd fast float %M, %B
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%O = fadd fast float %N, %C
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%P = fsub fast float %D, %O
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%Q = fadd fast float 1.200000e+01, %P
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ret float %Q
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}
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; Check again using minimal subset of FMF.
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define float @test4_reassoc(float %A, float %B, float %C, float %D) {
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; CHECK-LABEL: @test4_reassoc(
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; CHECK-NEXT: [[M:%.*]] = fadd reassoc float [[A:%.*]], 1.200000e+01
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; CHECK-NEXT: [[N:%.*]] = fadd reassoc float [[M]], [[B:%.*]]
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; CHECK-NEXT: [[O:%.*]] = fadd reassoc float [[N]], [[C:%.*]]
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; CHECK-NEXT: [[P:%.*]] = fsub reassoc float [[D:%.*]], [[O]]
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; CHECK-NEXT: [[Q:%.*]] = fadd reassoc float [[P]], 1.200000e+01
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; CHECK-NEXT: ret float [[Q]]
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;
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%M = fadd reassoc float 1.200000e+01, %A
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%N = fadd reassoc float %M, %B
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%O = fadd reassoc float %N, %C
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%P = fsub reassoc float %D, %O
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%Q = fadd reassoc float 1.200000e+01, %P
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ret float %Q
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}
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