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[BDCE] Fix typo in test; NFC 

shl by 32 is undefined. This was intended to be a shl by 31 as part
of a rotate sequence.

llvm-svn: 350265
This commit is contained in:
Nikita Popov 2019-01-02 22:34:32 +00:00
parent 062297dcc6
commit 41f5710328
1 changed files with 2 additions and 2 deletions
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4
llvm/test/Transforms/BDCE/dead-uses.ll
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@ -62,7 +62,7 @@ define i32 @pr39771_fshr_multi_use_arg(i32 %a) {
define i32 @pr39771_expanded_fshr_multi_use(i32 %a) {
; CHECK-LABEL: @pr39771_expanded_fshr_multi_use(
; CHECK-NEXT: [[TMP:%.*]] = lshr i32 [[A:%.*]], 1
; CHECK-NEXT: [[TMP2:%.*]] = shl i32 [[A]], 32
; CHECK-NEXT: [[TMP2:%.*]] = shl i32 [[A]], 31
; CHECK-NEXT: [[B:%.*]] = or i32 [[TMP]], [[TMP2]]
; CHECK-NEXT: [[C:%.*]] = lshr i32 [[B]], 23
; CHECK-NEXT: [[D:%.*]] = xor i32 [[C]], [[B]]
@ -70,7 +70,7 @@ define i32 @pr39771_expanded_fshr_multi_use(i32 %a) {
; CHECK-NEXT: ret i32 [[E]]
;
%tmp = lshr i32 %a, 1
%tmp2 = shl i32 %a, 32
%tmp2 = shl i32 %a, 31
%b = or i32 %tmp, %tmp2
%c = lshr i32 %b, 23
%d = xor i32 %c, %b