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llvm-mirror/test/CodeGen/X86/byval4.ll
Evan Cheng ef2509b3ba Fix a number of byval / memcpy / memset related codegen issues.
1. x86-64 byval alignment should be max of 8 and alignment of type. Previously the code was not doing what the commit message was saying.
2. Do not use byte repeat move and store operations. These are slow.

llvm-svn: 55139
2008-08-21 21:00:15 +00:00

37 lines
1.5 KiB
LLVM

; RUN: llvm-as < %s | llc -march=x86-64 | grep rep.movsq | count 2
; RUN: llvm-as < %s | llc -march=x86 | grep rep.movsl | count 2
%struct.s = type { i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16, i16, i16, i16, i16, i16, i16, i16,
i16 }
define void @g(i16 signext %a1, i16 signext %a2, i16 signext %a3,
i16 signext %a4, i16 signext %a5, i16 signext %a6) nounwind {
entry:
%a = alloca %struct.s, align 16
%tmp = getelementptr %struct.s* %a, i32 0, i32 0
store i16 %a1, i16* %tmp, align 16
%tmp2 = getelementptr %struct.s* %a, i32 0, i32 1
store i16 %a2, i16* %tmp2, align 16
%tmp4 = getelementptr %struct.s* %a, i32 0, i32 2
store i16 %a3, i16* %tmp4, align 16
%tmp6 = getelementptr %struct.s* %a, i32 0, i32 3
store i16 %a4, i16* %tmp6, align 16
%tmp8 = getelementptr %struct.s* %a, i32 0, i32 4
store i16 %a5, i16* %tmp8, align 16
%tmp10 = getelementptr %struct.s* %a, i32 0, i32 5
store i16 %a6, i16* %tmp10, align 16
call void @f( %struct.s* %a byval )
call void @f( %struct.s* %a byval )
ret void
}
declare void @f(%struct.s* byval)