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[InstCombine] add icmp (shr X, Y), 0 test; NFC 

llvm-svn: 314710
This commit is contained in:
Sanjay Patel 2017-10-02 20:07:15 +00:00
parent db861e7a81
commit 5ad573616e
1 changed files with 14 additions and 0 deletions
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14
llvm/test/Transforms/InstCombine/icmp-shr.ll
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@ -493,3 +493,17 @@ define i1 @exact_multiuse(i32 %x) {
ret i1 %cmp
}
declare void @foo2(<2 x i32>)
define <2 x i1> @exact_eq0_multiuse(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @exact_eq0_multiuse(
; CHECK-NEXT: [[SH:%.*]] = ashr exact <2 x i32> %x, %y
; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i32> [[SH]], zeroinitializer
; CHECK-NEXT: call void @foo2(<2 x i32> [[SH]])
; CHECK-NEXT: ret <2 x i1> [[CMP]]
;
%sh = ashr exact <2 x i32> %x, %y
%cmp = icmp eq <2 x i32> %sh, zeroinitializer
call void @foo2(<2 x i32> %sh)
ret <2 x i1> %cmp
}