mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-28 07:05:11 +00:00
278f958c61
induction variable value and a loop-variant value, don't force the insert position to be at the post-increment position, because it may not be dominated by the loop-variant value. This fixes a use-before-def problem noticed on PPC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96774 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
1.1 KiB
LLVM
33 lines
1.1 KiB
LLVM
; RUN: llc < %s -print-lsr-output |& FileCheck %s
|
|
|
|
; The icmp is a post-inc use, and the increment is in %bb11, but the
|
|
; scevgep needs to be inserted in %bb so that it is dominated by %t.
|
|
|
|
; CHECK: %t = load i8** undef
|
|
; CHECK: %scevgep = getelementptr i8* %t, i32 %lsr.iv.next
|
|
; CHECK: %c1 = icmp ult i8* %scevgep, undef
|
|
|
|
target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f128:64:128-n32"
|
|
target triple = "powerpc-apple-darwin9"
|
|
|
|
define void @foo() nounwind {
|
|
entry:
|
|
br label %bb11
|
|
|
|
bb11:
|
|
%i = phi i32 [ 0, %entry ], [ %i.next, %bb ] ; <i32> [#uses=3]
|
|
%ii = shl i32 %i, 2 ; <i32> [#uses=1]
|
|
%c0 = icmp eq i32 %i, undef ; <i1> [#uses=1]
|
|
br i1 %c0, label %bb13, label %bb
|
|
|
|
bb:
|
|
%t = load i8** undef, align 16 ; <i8*> [#uses=1]
|
|
%p = getelementptr i8* %t, i32 %ii ; <i8*> [#uses=1]
|
|
%c1 = icmp ult i8* %p, undef ; <i1> [#uses=1]
|
|
%i.next = add i32 %i, 1 ; <i32> [#uses=1]
|
|
br i1 %c1, label %bb11, label %bb13
|
|
|
|
bb13:
|
|
unreachable
|
|
}
|