mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-30 16:17:05 +00:00
fffe363493
- recognize string "{memory}" in the MI generation
- mark as mayload/maystore when there's a memory clobber constraint.
PR14859.
Patch by Krzysztof Parzyszek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172228 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
512 B
LLVM
22 lines
512 B
LLVM
; RUN: llc -O2 < %s | FileCheck %s
|
|
|
|
@G = common global i32 0, align 4
|
|
|
|
define i32 @foo(i8* %p) nounwind uwtable {
|
|
entry:
|
|
%p.addr = alloca i8*, align 8
|
|
%rv = alloca i32, align 4
|
|
store i8* %p, i8** %p.addr, align 8
|
|
store i32 0, i32* @G, align 4
|
|
%0 = load i8** %p.addr, align 8
|
|
; CHECK: blah
|
|
%1 = call i32 asm "blah", "=r,r,~{memory}"(i8* %0) nounwind
|
|
; CHECK: @G
|
|
store i32 %1, i32* %rv, align 4
|
|
%2 = load i32* %rv, align 4
|
|
%3 = load i32* @G, align 4
|
|
%add = add nsw i32 %2, %3
|
|
ret i32 %add
|
|
}
|
|
|