37 lines
2.1 KiB
LLVM
37 lines
2.1 KiB
LLVM
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; RUN: opt -S < %s | FileCheck %s
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; Test to ensure that calls to the memcpy/memmove/memset intrinsics are auto-upgraded
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; to remove the alignment parameter in favour of align attributes on the pointer args.
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; Make sure a non-zero alignment is propagated
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define void @test(i8* %p1, i8* %p2, i8* %p3) {
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; CHECK-LABEL: @test
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; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %p1, i8 55, i64 100, i1 false)
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %p1, i8* align 4 %p2, i64 50, i1 false)
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; CHECK: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 %p2, i8* align 4 %p3, i64 1000, i1 false)
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call void @llvm.memset.p0i8.i64(i8* %p1, i8 55, i64 100, i32 4, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p1, i8* %p2, i64 50, i32 4, i1 false)
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %p2, i8* %p3, i64 1000, i32 4, i1 false)
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ret void
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}
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; Make sure that a zero alignment is handled properly
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define void @test2(i8* %p1, i8* %p2, i8* %p3) {
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; CHECK-LABEL: @test
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; CHECK: call void @llvm.memset.p0i8.i64(i8* %p1, i8 55, i64 100, i1 false)
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p1, i8* %p2, i64 50, i1 false)
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; CHECK: call void @llvm.memmove.p0i8.p0i8.i64(i8* %p2, i8* %p3, i64 1000, i1 false)
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call void @llvm.memset.p0i8.i64(i8* %p1, i8 55, i64 100, i32 0, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p1, i8* %p2, i64 50, i32 0, i1 false)
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call void @llvm.memmove.p0i8.p0i8.i64(i8* %p2, i8* %p3, i64 1000, i32 0, i1 false)
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ret void
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}
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; CHECK: declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg)
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; CHECK: declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
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; CHECK: declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1 immarg)
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declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i32, i1)
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly , i8* nocapture readonly, i64, i32, i1)
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declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)
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