| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -basic-aa -memcpyopt -S < %s -enable-memcpyopt-memoryssa=0 | FileCheck %s |
| ; RUN: opt -basic-aa -memcpyopt -S < %s -enable-memcpyopt-memoryssa=1 -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(i32*) |
| |
| declare void @llvm.memset.p0i8.i64(i8* 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: [[BC:%.*]] = bitcast [101 x i32]* [[X]] to i8* |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 [[BC]], i8 0, i64 400, i1 false) |
| ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [101 x i32], [101 x i32]* [[X]], i32 0, i32 100 |
| ; CHECK-NEXT: store atomic i32 0, i32* [[GEP1]] unordered, align 4 |
| ; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds [101 x i32], [101 x i32]* [[X]], i32 0, i32 0 |
| ; CHECK-NEXT: call void @otherf(i32* [[GEP2]]) |
| ; CHECK-NEXT: ret void |
| ; |
| %x = alloca [101 x i32], align 16 |
| %bc = bitcast [101 x i32]* %x to i8* |
| call void @llvm.memset.p0i8.i64(i8* align 16 %bc, i8 0, i64 400, i1 false) |
| %gep1 = getelementptr inbounds [101 x i32], [101 x i32]* %x, i32 0, i32 100 |
| store atomic i32 0, i32* %gep1 unordered, align 4 |
| %gep2 = getelementptr inbounds [101 x i32], [101 x i32]* %x, i32 0, i32 0 |
| call void @otherf(i32* %gep2) |
| 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(i32* nocapture [[NEW]]) |
| ; CHECK-NEXT: store atomic i32 0, i32* @x unordered, align 4 |
| ; CHECK-NEXT: call void @otherf(i32* nocapture [[NEW]]) |
| ; CHECK-NEXT: ret void |
| ; |
| %old = alloca i32 |
| %new = alloca i32 |
| call void @otherf(i32* nocapture %old) |
| store atomic i32 0, i32* @x unordered, align 4 |
| %v = load i32, i32* %old |
| store i32 %v, i32* %new |
| call void @otherf(i32* nocapture %new) |
| ret void |
| } |
| |