77ccd853d0
When `-pass-remarks=loop-vectorize` is specified, the subsequent logic is executed to display detailed debug messages even if no PreHeader exists in the loop. Therefore, an assert occurs when the `getLoopPreHeader()` function is called. This commit resolves that issue. Fixed: #165377
25 lines
729 B
LLVM
25 lines
729 B
LLVM
; RUN: opt < %s -passes=loop-vectorize -pass-remarks=loop-vectorize -debug -disable-output 2>&1 | FileCheck %s
|
|
; REQUIRES: asserts
|
|
|
|
; Make sure LV legal bails out when the loop doesn't have a legal pre-header.
|
|
; CHECK-LABEL: 'not_exist_preheader'
|
|
; CHECK: LV: Not vectorizing: Loop doesn't have a legal pre-header.
|
|
define void @not_exist_preheader(ptr %dst, ptr %arg) nounwind uwtable {
|
|
entry:
|
|
indirectbr ptr %arg, [label %exit.0, label %loop]
|
|
|
|
exit.0:
|
|
ret void
|
|
|
|
loop:
|
|
%iv = phi i32 [0, %entry], [%iv.next, %loop]
|
|
%gep = getelementptr inbounds i32, ptr %dst, i32 %iv
|
|
store i32 0, ptr %gep, align 4
|
|
%iv.next = add i32 %iv, 1
|
|
%cmp = icmp slt i32 %iv.next, 4
|
|
br i1 %cmp, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|