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; 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
}
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