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[InstCombine] add icmp (lshr X, C1), C2 test; NFC 

llvm-svn: 314696
This commit is contained in:
Sanjay Patel 2017-10-02 18:16:17 +00:00
parent cbb415128e
commit ce86ab3ed7
1 changed files with 15 additions and 0 deletions
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15
llvm/test/Transforms/InstCombine/icmp-shr.ll
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@ -478,3 +478,18 @@ define i1 @PR24873(i64 %V) {
ret i1 %icmp
}
declare void @foo(i32)
define i1 @exact_multiuse(i32 %x) {
; CHECK-LABEL: @exact_multiuse(
; CHECK-NEXT: [[SH:%.*]] = lshr exact i32 %x, 7
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[SH]], 1024
; CHECK-NEXT: call void @foo(i32 [[SH]])
; CHECK-NEXT: ret i1 [[CMP]]
;
%sh = lshr exact i32 %x, 7
%cmp = icmp eq i32 %sh, 1024
call void @foo(i32 %sh)
ret i1 %cmp
}