mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-25 14:32:53 +00:00
73bfa4aecf
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135625 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: opt < %s -basicaa -licm -S | FileCheck %s
|
|
|
|
; Make sure we don't hoist a conditionally-executed store out of the loop;
|
|
; it would violate the concurrency memory model
|
|
|
|
@g = common global i32 0, align 4
|
|
|
|
define void @bar(i32 %n, i32 %b) nounwind uwtable ssp {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.inc, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc5, %for.inc ]
|
|
%cmp = icmp slt i32 %i.0, %n
|
|
br i1 %cmp, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %for.cond
|
|
%tobool = icmp eq i32 %b, 0
|
|
br i1 %tobool, label %for.inc, label %if.then
|
|
|
|
if.then: ; preds = %for.body
|
|
%tmp3 = load i32* @g, align 4
|
|
%inc = add nsw i32 %tmp3, 1
|
|
store i32 %inc, i32* @g, align 4
|
|
br label %for.inc
|
|
|
|
; CHECK: load i32*
|
|
; CHECK-NEXT: add
|
|
; CHECK-NEXT: store i32
|
|
|
|
for.inc: ; preds = %for.body, %if.then
|
|
%inc5 = add nsw i32 %i.0, 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|