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[NFC][Reassociate] Fix mistake in 468b2ad

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Missed 2 'fast fsub(0.0,X) -> fneg(X)' changes.

llvm-svn: 362631
This commit is contained in:
Cameron McInally 2019-06-05 18:50:07 +00:00
parent dc2e0e5492
commit cd1f261230
1 changed files with 8 additions and 10 deletions
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18
test/Transforms/Reassociate/fast-basictest.ll
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@ -541,20 +541,18 @@ define float @test17(float %a, float %b, float %z) {
ret float %g
}
; FIXME: This reassociation is not working.
define float @test17_unary_fneg(float %a, float %b, float %z) {
; CHECK-LABEL: @test17_unary_fneg(
; CHECK-NEXT: [[E:%.*]] = fmul fast float [[A:%.*]], -1.234500e+04
; CHECK-NEXT: [[F:%.*]] = fmul fast float [[E]], [[B:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = fmul fast float [[F]], [[Z:%.*]]
; CHECK-NEXT: [[G:%.*]] = fsub fast float -0.000000e+00, [[TMP1]]
; CHECK-NEXT: ret float [[G]]
; CHECK-NEXT: [[D:%.*]] = fmul fast float [[A:%.*]], 1.234500e+04
; CHECK-NEXT: [[E:%.*]] = fmul fast float [[D]], [[B:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = fmul fast float [[E]], [[Z:%.*]]
; CHECK-NEXT: ret float [[TMP1]]
;
%c = fneg fast float %z
%d = fmul fast float %a, %b
%e = fmul fast float %c, %d
%f = fmul fast float %e, 1.234500e+04
%g = fsub fast float 0.000000e+00, %f
%g = fneg fast float %f
ret float %g
}
@ -592,14 +590,14 @@ define float @test18(float %a, float %b, float %z) {
define float @test18_unary_fneg(float %a, float %b, float %z) {
; CHECK-LABEL: @test18_unary_fneg(
; CHECK-NEXT: [[C:%.*]] = fmul fast float [[Z:%.*]], -4.000000e+01
; CHECK-NEXT: [[TMP1:%.*]] = fmul fast float [[C]], [[A:%.*]]
; CHECK-NEXT: [[F:%.*]] = fsub fast float -0.000000e+00, [[TMP1]]
; CHECK-NEXT: [[E:%.*]] = fmul fast float [[C]], [[A:%.*]]
; CHECK-NEXT: [[F:%.*]] = fneg fast float [[E]]
; CHECK-NEXT: ret float [[F]]
;
%d = fmul fast float %z, 4.000000e+01
%c = fneg fast float %d
%e = fmul fast float %a, %c
%f = fsub fast float 0.000000e+00, %e
%f = fneg fast float %e
ret float %f
}