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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @test(ptr %src, i8 %c, i64 %size) {
; CHECK-LABEL: @test(
; CHECK-NEXT: [[DST1:%.*]] = alloca i8, i64 [[SIZE:%.*]], align 1
; CHECK-NEXT: [[DST2:%.*]] = alloca i8, i64 [[SIZE]], align 1
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST1]], i8 [[C:%.*]], i64 [[SIZE]], i1 false)
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST2]], i8 [[C]], i64 [[SIZE]], i1 false)
; CHECK-NEXT: ret void
;
%dst1 = alloca i8, i64 %size
%dst2 = alloca i8, i64 %size
call void @llvm.memset.p0.i64(ptr align 8 %dst1, i8 %c, i64 %size, i1 false)
call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst2, ptr align 8 %dst1, i64 %size, i1 false)
ret void
}
; Differing sizes, but would be UB if size1 < size2 since the memcpy would reference outside of the first alloca
define void @dynsize_test(ptr %src, i8 %c, i64 %size1, i64 %size2) {
; CHECK-LABEL: @dynsize_test(
; CHECK-NEXT: [[DST1:%.*]] = alloca i8, i64 [[SIZE1:%.*]], align 1
; CHECK-NEXT: [[DST2:%.*]] = alloca i8, i64 [[SIZE2:%.*]], align 1
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST1]], i8 [[C:%.*]], i64 [[SIZE1]], i1 false)
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST2]], i8 [[C]], i64 [[SIZE2]], i1 false)
; CHECK-NEXT: ret void
;
%dst1 = alloca i8, i64 %size1
%dst2 = alloca i8, i64 %size2
call void @llvm.memset.p0.i64(ptr align 8 %dst1, i8 %c, i64 %size1, i1 false)
call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst2, ptr align 8 %dst1, i64 %size2, i1 false)
ret void
}
declare void @llvm.memset.p0.i64(ptr, i8, i64, i1)
declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)
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