51 lines
1.8 KiB
LLVM
51 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -passes=memcpyopt -S < %s -verify-memoryssa | FileCheck %s
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
target triple = "x86_64-apple-macosx10.7.0"
|
|
|
|
@x = global i32 0
|
|
|
|
declare void @otherf(ptr)
|
|
|
|
declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind
|
|
|
|
; memcpyopt should not touch atomic ops
|
|
define void @test1() nounwind uwtable ssp {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: [[X:%.*]] = alloca [101 x i32], align 16
|
|
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 16 [[X]], i8 0, i64 400, i1 false)
|
|
; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [101 x i32], ptr [[X]], i32 0, i32 100
|
|
; CHECK-NEXT: store atomic i32 0, ptr [[GEP1]] unordered, align 4
|
|
; CHECK-NEXT: call void @otherf(ptr [[X]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%x = alloca [101 x i32], align 16
|
|
call void @llvm.memset.p0.i64(ptr align 16 %x, i8 0, i64 400, i1 false)
|
|
%gep1 = getelementptr inbounds [101 x i32], ptr %x, i32 0, i32 100
|
|
store atomic i32 0, ptr %gep1 unordered, align 4
|
|
call void @otherf(ptr %x)
|
|
ret void
|
|
}
|
|
|
|
; memcpyopt across unordered store
|
|
define void @test2() nounwind uwtable ssp {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: [[OLD:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: [[NEW:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: call void @otherf(ptr nocapture [[NEW]])
|
|
; CHECK-NEXT: store atomic i32 0, ptr @x unordered, align 4
|
|
; CHECK-NEXT: call void @otherf(ptr nocapture [[NEW]])
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
%old = alloca i32
|
|
%new = alloca i32
|
|
call void @otherf(ptr nocapture %old)
|
|
store atomic i32 0, ptr @x unordered, align 4
|
|
%v = load i32, ptr %old
|
|
store i32 %v, ptr %new
|
|
call void @otherf(ptr nocapture %new)
|
|
ret void
|
|
}
|
|
|