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[NFC][FPEnv] Pre-commit tests for canonicalize negated operand of fdiv. 

llvm-svn: 367233
This commit is contained in:
Cameron McInally 2019-07-29 16:09:56 +00:00
parent 5ab948f823
commit b32a6592eb
1 changed files with 22 additions and 0 deletions
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22
llvm/test/Transforms/InstCombine/fdiv.ll
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@ -510,6 +510,17 @@ define double @fdiv_fneg1(double %x, double %y) {
ret double %div
}
define double @fdiv_unary_fneg1(double %x, double %y) {
; CHECK-LABEL: @fdiv_unary_fneg1(
; CHECK-NEXT: [[TMP1:%.*]] = fdiv double [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[DIV:%.*]] = fsub double -0.000000e+00, [[TMP1]]
; CHECK-NEXT: ret double [[DIV]]
;
%neg = fneg double %x
%div = fdiv double %neg, %y
ret double %div
}
define <2 x float> @fdiv_fneg2(<2 x float> %x, <2 x float> %y) {
; CHECK-LABEL: @fdiv_fneg2(
; CHECK-NEXT: [[TMP1:%.*]] = fdiv <2 x float> [[Y:%.*]], [[X:%.*]]
@ -521,6 +532,17 @@ define <2 x float> @fdiv_fneg2(<2 x float> %x, <2 x float> %y) {
ret <2 x float> %div
}
define <2 x float> @fdiv_unary_fneg2(<2 x float> %x, <2 x float> %y) {
; CHECK-LABEL: @fdiv_unary_fneg2(
; CHECK-NEXT: [[TMP1:%.*]] = fdiv <2 x float> [[Y:%.*]], [[X:%.*]]
; CHECK-NEXT: [[DIV:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[TMP1]]
; CHECK-NEXT: ret <2 x float> [[DIV]]
;
%neg = fneg <2 x float> %x
%div = fdiv <2 x float> %y, %neg
ret <2 x float> %div
}
define float @fdiv_fneg1_extra_use(float %x, float %y) {
; CHECK-LABEL: @fdiv_fneg1_extra_use(
; CHECK-NEXT: [[NEG:%.*]] = fsub float -0.000000e+00, [[X:%.*]]