forked from OSchip/llvm-project
parent
b4a773b452
commit
291a189cda
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@ -1,17 +1,27 @@
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; RUN: llc < %s -march=x86-64 | grep call.*memcpy | count 2
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; RUN: llc < %s -march=x86-64 | FileCheck %s
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declare void @llvm.memcpy.i64(i8*, i8*, i64, i32)
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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define i8* @my_memcpy(i8* %a, i8* %b, i64 %n) nounwind {
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; Variable memcpy's should lower to calls.
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define i8* @test1(i8* %a, i8* %b, i64 %n) nounwind {
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entry:
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tail call void @llvm.memcpy.i64( i8* %a, i8* %b, i64 %n, i32 1 )
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tail call void @llvm.memcpy.p0i8.p0i8.i64( i8* %a, i8* %b, i64 %n, i32 1, i1 0 )
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ret i8* %a
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; CHECK: test1:
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; CHECK: memcpy
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}
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define i8* @my_memcpy2(i64* %a, i64* %b, i64 %n) nounwind {
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; Variable memcpy's should lower to calls.
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define i8* @test2(i64* %a, i64* %b, i64 %n) nounwind {
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entry:
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%tmp14 = bitcast i64* %a to i8*
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%tmp25 = bitcast i64* %b to i8*
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tail call void @llvm.memcpy.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8 )
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp14, i8* %tmp25, i64 %n, i32 8, i1 0 )
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ret i8* %tmp14
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; CHECK: test2:
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; CHECK: memcpy
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}
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