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Reduced test case for pr42279 in advance of the relevant re-commit + fix 

llvm-svn: 363601
This commit is contained in:
Philip Reames 2019-06-17 19:27:45 +00:00
parent 8af7198c6c
commit 58c75565f3
1 changed files with 31 additions and 0 deletions
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31
llvm/test/Transforms/IndVarSimplify/lftr.ll
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@ -599,3 +599,34 @@ for.end: ; preds = %for.end.loopexit, %
%sum.0.lcssa = phi float [ 0.000000e+00, %entry ], [ %add1.lcssa, %for.end.loopexit ]
ret float %sum.0.lcssa
}
define void @ptr_non_cmp_exit_test() {
; CHECK-LABEL: @ptr_non_cmp_exit_test(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY29:%.*]]
; CHECK: for.body29:
; CHECK-NEXT: [[IV:%.*]] = phi i8* [ null, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY29]] ]
; CHECK-NEXT: [[TMP0:%.*]] = load volatile i8, i8* [[IV]], align 1
; CHECK-NEXT: [[IV_NEXT]] = getelementptr inbounds i8, i8* [[IV]], i64 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i8* [[IV_NEXT]], inttoptr (i64 11 to i8*)
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY29]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
entry:
br label %for.body29
for.body29:
%iv = phi i8* [ null, %entry ], [ %iv.next, %for.body29 ]
load volatile i8, i8* %iv, align 1
%iv.next = getelementptr inbounds i8, i8* %iv, i64 1
%cmp = icmp ne i8* %iv.next, inttoptr (i64 11 to i8*)
%and = and i1 %cmp, %cmp
br i1 %and, label %for.body29, label %exit
exit:
ret void
}