29 lines
657 B
LLVM
29 lines
657 B
LLVM
|
; RUN: opt < %s -reassociate -S
|
||
|
|
|
||
|
|
; PR28367
|
||
|
|
|
||
|
|
; Check to make sure this test does not assert or segfault. If we get too
|
||
|
|
; aggressive with retrying instructions it's possible to invalidate our
|
||
|
|
; iterator. See PR28367 for complete details.
|
||
|
|
|
||
|
|
define void @fn1(i32 %a, i1 %c, i32* %ptr) {
|
||
|
|
entry:
|
||
|
|
br label %for.cond
|
||
|
|
|
||
|
|
for.cond:
|
||
|
|
%d.0 = phi i32 [ 1, %entry ], [ 2, %for.body ]
|
||
|
|
br i1 %c, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%sub1 = sub i32 %a, %d.0
|
||
|
|
%dead1 = add i32 %sub1, 1
|
||
|
|
%dead2 = mul i32 %dead1, 3
|
||
|
|
%dead3 = mul i32 %dead2, %sub1
|
||
|
|
%sub2 = sub nsw i32 0, %d.0
|
||
|
|
store i32 %sub2, i32* %ptr, align 4
|
||
|
|
br label %for.cond
|
||
|
|
|
||
|
|
for.end:
|
||
|
|
ret void
|
||
|
|
}
|