mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-28 04:33:05 +00:00
23 lines
709 B
LLVM
23 lines
709 B
LLVM
|
; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
|
||
|
|
|
||
|
|
target datalayout = "e"
|
||
|
|
|
||
|
|
declare void @foo(i8*)
|
||
|
|
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
|
||
|
|
|
||
|
|
define void @test() {
|
||
|
|
%ptr1 = alloca i8
|
||
|
|
%ptr2 = alloca i8
|
||
|
|
call void @foo(i8* %ptr2)
|
||
|
|
call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr1, i8* %ptr2, i32 1, i32 1, i1 false)
|
||
|
|
call void @foo(i8* %ptr1)
|
||
|
|
ret void
|
||
|
|
|
||
|
|
; Check that the transformation isn't applied if the called function can
|
||
|
|
; capture the pointer argument (i.e. the nocapture attribute isn't present)
|
||
|
|
; CHECK-LABEL: @test(
|
||
|
|
; CHECK: call void @foo(i8* %ptr2)
|
||
|
|
; CHECK-NEXT: call void @llvm.memcpy
|
||
|
|
; CHECK-NEXT: call void @foo(i8* %ptr1)
|
||
|
|
}
|