mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
f226bdb328
canVectorize is only checking if the loop has a normalized pre-header if DoExtraAnalysis is true. This doesn't make sense to me because reporting analysis information shouldn't alter legality checks. This is probably the result of a last minute minor change before committing (?). Patch by Diego Caballero. Reviewed By: fhahn Differential Revision: https://reviews.llvm.org/D40973 llvm-svn: 321172
28 lines
660 B
LLVM
28 lines
660 B
LLVM
; RUN: opt < %s -loop-vectorize -debug -S -o /dev/null 2>&1 | FileCheck %s
|
|
; REQUIRES: asserts
|
|
|
|
; D40973
|
|
; Make sure LV legal bails out when the loop doesn't have a legal pre-header.
|
|
|
|
; CHECK: LV: Loop doesn't have a legal pre-header.
|
|
|
|
define void @inc(i32 %n, i8* %P) {
|
|
%1 = icmp sgt i32 %n, 0
|
|
br i1 %1, label %BB1, label %BB2
|
|
|
|
BB1:
|
|
indirectbr i8* %P, [label %.lr.ph]
|
|
|
|
BB2:
|
|
br label %.lr.ph
|
|
|
|
.lr.ph:
|
|
%indvars.iv = phi i32 [ %indvars.iv.next, %.lr.ph ], [ 0, %BB1 ], [ 0, %BB2 ]
|
|
%indvars.iv.next = add i32 %indvars.iv, 1
|
|
%exitcond = icmp eq i32 %indvars.iv.next, %n
|
|
br i1 %exitcond, label %._crit_edge, label %.lr.ph
|
|
|
|
._crit_edge:
|
|
ret void
|
|
}
|