forked from OSchip/llvm-project
90 lines
3.4 KiB
LLVM
90 lines
3.4 KiB
LLVM
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; RUN: opt -memcpyopt -S < %s | FileCheck %s
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
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@undef = internal constant i32 undef, align 4
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define void @test_undef() nounwind {
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%a = alloca i32, align 4
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%i8 = bitcast i32* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast (i32* @undef to i8*), i64 4, i1 false)
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ret void
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; CHECK-LABEL: @test_undef(
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; CHECK: call void @llvm.memset
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; CHECK-NOT: call void @llvm.memcpy
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; CHECK: ret void
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}
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@i32x3 = internal constant [3 x i32] [i32 -1, i32 -1, i32 -1], align 4
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define void @test_i32x3() nounwind {
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%a = alloca [3 x i32], align 4
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%i8 = bitcast [3 x i32]* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast ([3 x i32]* @i32x3 to i8*), i64 12, i1 false)
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ret void
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; CHECK-LABEL: @test_i32x3(
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; CHECK: call void @llvm.memset
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; CHECK-NOT: call void @llvm.memcpy
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; CHECK: ret void
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}
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@i32x3_undef = internal constant [3 x i32] [i32 -1, i32 undef, i32 -1], align 4
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define void @test_i32x3_undef() nounwind {
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%a = alloca [3 x i32], align 4
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%i8 = bitcast [3 x i32]* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast ([3 x i32]* @i32x3_undef to i8*), i64 12, i1 false)
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ret void
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; CHECK-LABEL: @test_i32x3_undef(
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; CHECK: call void @llvm.memset
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; CHECK-NOT: call void @llvm.memcpy
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; CHECK: ret void
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}
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%struct.bitfield = type { i8, [3 x i8] }
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@bitfield = private unnamed_addr constant %struct.bitfield { i8 -86, [3 x i8] [i8 -86, i8 -86, i8 -86] }, align 4
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define void @test_bitfield() nounwind {
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%a = alloca %struct.bitfield, align 4
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%i8 = bitcast %struct.bitfield* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast (%struct.bitfield* @bitfield to i8*), i64 4, i1 false)
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ret void
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; CHECK-LABEL: @test_bitfield(
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; CHECK: call void @llvm.memset
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; CHECK-NOT: call void @llvm.memcpy
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; CHECK: ret void
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}
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@i1x16_zero = internal constant <16 x i1> <i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0, i1 0>, align 4
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define void @test_i1x16_zero() nounwind {
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%a = alloca <16 x i1>, align 4
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%i8 = bitcast <16 x i1>* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast (<16 x i1>* @i1x16_zero to i8*), i64 16, i1 false)
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ret void
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; CHECK-LABEL: @test_i1x16_zero(
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; CHECK: call void @llvm.memset
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; CHECK-NOT: call void @llvm.memcpy
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; CHECK: ret void
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}
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; i1 isn't currently handled. Should it?
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@i1x16_one = internal constant <16 x i1> <i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1, i1 1>, align 4
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define void @test_i1x16_one() nounwind {
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%a = alloca <16 x i1>, align 4
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%i8 = bitcast <16 x i1>* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast (<16 x i1>* @i1x16_one to i8*), i64 16, i1 false)
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ret void
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; CHECK-LABEL: @test_i1x16_one(
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; CHECK-NOT: call void @llvm.memset
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; CHECK: call void @llvm.memcpy
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; CHECK: ret void
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}
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@half = internal constant half 0xH0000, align 4
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define void @test_half() nounwind {
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%a = alloca half, align 4
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%i8 = bitcast half* %a to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %i8, i8* align 4 bitcast (half* @half to i8*), i64 2, i1 false)
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ret void
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; CHECK-LABEL: @test_half(
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; CHECK: call void @llvm.memset
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; CHECK-NOT: call void @llvm.memcpy
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; CHECK: ret void
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}
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