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Test that we get rep movs when calling memcpy 

llvm-svn: 11352
This commit is contained in:
Chris Lattner 2004-02-12 17:53:43 +00:00
parent 8dc99feeaf
commit 71957a90b3
1 changed files with 24 additions and 0 deletions
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llvm/test/Regression/CodeGen/X86/2004-02-12-Memcpy.llx Normal file
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; RUN: llvm-as < %s | llc -march=x86 | grep movs
declare sbyte* %llvm.memcpy(sbyte* %A, sbyte* %B, uint %amt, uint %align)
%A = global [1000 x int] zeroinitializer
%B = global [1000 x int] zeroinitializer
void %main() {
; dword copy
call sbyte* %llvm.memcpy(sbyte* cast (int* getelementptr ([1000 x int]* %A, long 0, long 0) to sbyte*),
sbyte* cast (int* getelementptr ([1000 x int]* %B, long 0, long 0) to sbyte*),
uint 4000, uint 4)
; word copy
call sbyte* %llvm.memcpy(sbyte* cast (int* getelementptr ([1000 x int]* %A, long 0, long 0) to sbyte*),
sbyte* cast (int* getelementptr ([1000 x int]* %B, long 0, long 0) to sbyte*),
uint 4000, uint 2)
; byte copy
call sbyte* %llvm.memcpy(sbyte* cast (int* getelementptr ([1000 x int]* %A, long 0, long 0) to sbyte*),
sbyte* cast (int* getelementptr ([1000 x int]* %B, long 0, long 0) to sbyte*),
uint 4000, uint 1)
ret void
}