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[InstCombine] regenerate checks; NFC 

llvm-svn: 324924
This commit is contained in:
Sanjay Patel 2018-02-12 19:14:01 +00:00
parent 5012793e05
commit e4fcb00290
1 changed files with 44 additions and 28 deletions
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72
llvm/test/Transforms/InstCombine/fdiv.ll
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@ -1,69 +1,85 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instcombine < %s | FileCheck %s ; RUN: opt -S -instcombine < %s | FileCheck %s
define float @test1(float %x) nounwind readnone ssp { define float @test1(float %x) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[DIV:%.*]] = fmul float [[X:%.*]], 0x47D0000000000000
; CHECK-NEXT: ret float [[DIV]]
;
%div = fdiv float %x, 0x3810000000000000 %div = fdiv float %x, 0x3810000000000000
ret float %div ret float %div
; CHECK-LABEL: @test1(
; CHECK-NEXT: fmul float %x, 0x47D0000000000000
} }
define float @test2(float %x) nounwind readnone ssp { define float @test2(float %x) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[DIV:%.*]] = fdiv float [[X:%.*]], 0x47E0000000000000
; CHECK-NEXT: ret float [[DIV]]
;
%div = fdiv float %x, 0x47E0000000000000 %div = fdiv float %x, 0x47E0000000000000
ret float %div ret float %div
; CHECK-LABEL: @test2(
; CHECK-NEXT: fdiv float %x, 0x47E0000000000000
} }
define float @test3(float %x) nounwind readnone ssp { define float @test3(float %x) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[DIV:%.*]] = fdiv float [[X:%.*]], 0x36A0000000000000
; CHECK-NEXT: ret float [[DIV]]
;
%div = fdiv float %x, 0x36A0000000000000 %div = fdiv float %x, 0x36A0000000000000
ret float %div ret float %div
; CHECK-LABEL: @test3(
; CHECK-NEXT: fdiv float %x, 0x36A0000000000000
} }
define float @test4(float %x) nounwind readnone ssp { define float @test4(float %x) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[DIV:%.*]] = fmul fast float [[X:%.*]], 1.250000e-01
; CHECK-NEXT: ret float [[DIV]]
;
%div = fdiv fast float %x, 8.0 %div = fdiv fast float %x, 8.0
ret float %div ret float %div
; CHECK-LABEL: @test4(
; CHECK-NEXT: fmul fast float %x, 1.250000e-01
} }
define float @test5(float %x, float %y, float %z) nounwind readnone ssp { define float @test5(float %x, float %y, float %z) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: [[TMP1:%.*]] = fmul fast float [[Y:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[DIV2:%.*]] = fdiv fast float [[X:%.*]], [[TMP1]]
; CHECK-NEXT: ret float [[DIV2]]
;
%div1 = fdiv fast float %x, %y %div1 = fdiv fast float %x, %y
%div2 = fdiv fast float %div1, %z %div2 = fdiv fast float %div1, %z
ret float %div2 ret float %div2
; CHECK-LABEL: @test5(
; CHECK-NEXT: fmul fast
; CHECK-NEXT: fdiv fast
} }
define float @test6(float %x, float %y, float %z) nounwind readnone ssp { define float @test6(float %x, float %y, float %z) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: [[TMP1:%.*]] = fmul fast float [[Z:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[DIV2:%.*]] = fdiv fast float [[TMP1]], [[X:%.*]]
; CHECK-NEXT: ret float [[DIV2]]
;
%div1 = fdiv fast float %x, %y %div1 = fdiv fast float %x, %y
%div2 = fdiv fast float %z, %div1 %div2 = fdiv fast float %z, %div1
ret float %div2 ret float %div2
; CHECK-LABEL: @test6(
; CHECK-NEXT: fmul fast
; CHECK-NEXT: fdiv fast
} }
; CHECK-LABEL @fdiv_fneg_fneg(
; CHECK: %div = fdiv float %x, %y
define float @fdiv_fneg_fneg(float %x, float %y) { define float @fdiv_fneg_fneg(float %x, float %y) {
; CHECK-LABEL: @fdiv_fneg_fneg(
; CHECK-NEXT: [[DIV:%.*]] = fdiv float [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret float [[DIV]]
;
%x.fneg = fsub float -0.0, %x %x.fneg = fsub float -0.0, %x
%y.fneg = fsub float -0.0, %y %y.fneg = fsub float -0.0, %y
%div = fdiv float %x.fneg, %y.fneg %div = fdiv float %x.fneg, %y.fneg
ret float %div ret float %div
} }
; CHECK-LABEL @fdiv_fneg_fneg_fast( ; The test above shows that no FMF are needed, but show that we are not dropping FMF.
; CHECK: %div = fdiv fast float %x, %y
define float @fdiv_fneg_fneg_fast(float %x, float %y) { define float @fdiv_fneg_fneg_fast(float %x, float %y) {
; CHECK-LABEL: @fdiv_fneg_fneg_fast(
; CHECK-NEXT: [[DIV:%.*]] = fdiv fast float [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret float [[DIV]]
;
%x.fneg = fsub float -0.0, %x %x.fneg = fsub float -0.0, %x
%y.fneg = fsub float -0.0, %y %y.fneg = fsub float -0.0, %y
%div = fdiv fast float %x.fneg, %y.fneg %div = fdiv fast float %x.fneg, %y.fneg
ret float %div ret float %div
} }