; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -passes=memcpyopt -S < %s -verify-memoryssa | FileCheck %s declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind @undef = internal constant i32 undef, align 4 define void @test_undef() nounwind { ; CHECK-LABEL: @test_undef( ; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[A]], i8 undef, i64 4, i1 false) ; CHECK-NEXT: ret void ; %a = alloca i32, align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @undef, i64 4, i1 false) ret void } @i32x3 = internal constant [3 x i32] [i32 -1, i32 -1, i32 -1], align 4 define void @test_i32x3() nounwind { ; CHECK-LABEL: @test_i32x3( ; CHECK-NEXT: [[A:%.*]] = alloca [3 x i32], align 4 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[A]], i8 -1, i64 12, i1 false) ; CHECK-NEXT: ret void ; %a = alloca [3 x i32], align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @i32x3, i64 12, i1 false) ret void } @i32x3_undef = internal constant [3 x i32] [i32 -1, i32 undef, i32 -1], align 4 define void @test_i32x3_undef() nounwind { ; CHECK-LABEL: @test_i32x3_undef( ; CHECK-NEXT: [[A:%.*]] = alloca [3 x i32], align 4 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[A]], i8 -1, i64 12, i1 false) ; CHECK-NEXT: ret void ; %a = alloca [3 x i32], align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @i32x3_undef, i64 12, i1 false) ret void } %struct.bitfield = type { i8, [3 x i8] } @bitfield = private unnamed_addr constant %struct.bitfield { i8 -86, [3 x i8] [i8 -86, i8 -86, i8 -86] }, align 4 define void @test_bitfield() nounwind { ; CHECK-LABEL: @test_bitfield( ; CHECK-NEXT: [[A:%.*]] = alloca [[STRUCT_BITFIELD:%.*]], align 4 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[A]], i8 -86, i64 4, i1 false) ; CHECK-NEXT: ret void ; %a = alloca %struct.bitfield, align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @bitfield, i64 4, i1 false) ret void } @i1x16_zero = internal constant <16 x i1> , align 4 define void @test_i1x16_zero() nounwind { ; CHECK-LABEL: @test_i1x16_zero( ; CHECK-NEXT: [[A:%.*]] = alloca <16 x i1>, align 4 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[A]], i8 0, i64 16, i1 false) ; CHECK-NEXT: ret void ; %a = alloca <16 x i1>, align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @i1x16_zero, i64 16, i1 false) ret void } ; i1 isn't currently handled. Should it? @i1x16_one = internal constant <16 x i1> , align 4 define void @test_i1x16_one() nounwind { ; CHECK-LABEL: @test_i1x16_one( ; CHECK-NEXT: [[A:%.*]] = alloca <16 x i1>, align 4 ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[A]], ptr align 4 @i1x16_one, i64 16, i1 false) ; CHECK-NEXT: ret void ; %a = alloca <16 x i1>, align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @i1x16_one, i64 16, i1 false) ret void } @half = internal constant half 0xH0000, align 4 define void @test_half() nounwind { ; CHECK-LABEL: @test_half( ; CHECK-NEXT: [[A:%.*]] = alloca half, align 4 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[A]], i8 0, i64 2, i1 false) ; CHECK-NEXT: ret void ; %a = alloca half, align 4 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 @half, i64 2, i1 false) ret void }