[llvm-commits] CVS: llvm/test/Regression/Transforms/InstCombine/memmove.ll

[Chris Lattner]

Changes in directory llvm/test/Regression/Transforms/InstCombine:

memmove.ll added (r1.1)
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Log message:

New testcase for memmove -> memcpy transform


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Diffs of the changes:  (+23 -0)

Index: llvm/test/Regression/Transforms/InstCombine/memmove.ll
diff -c /dev/null llvm/test/Regression/Transforms/InstCombine/memmove.ll:1.1
*** /dev/null	Mon Oct 11 23:52:05 2004
--- llvm/test/Regression/Transforms/InstCombine/memmove.ll	Mon Oct 11 23:51:55 2004
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*** 0 ****
--- 1,23 ----
+ ; This test makes sure that memmove instructions are properly eliminated.
+ ;
+ 
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'call void %llvm.memmove'
+ 
+ %S = internal constant [33 x sbyte] c"panic: restorelist inconsistency\00"
+ 
+ implementation
+ 
+ declare void %llvm.memmove(sbyte*, sbyte*, uint, uint)
+ 
+ void %test1(sbyte* %A, sbyte* %B, uint %N) {
+  	;; 0 bytes -> noop.
+ 	call void %llvm.memmove(sbyte* %A, sbyte* %B, uint 0, uint 1)
+ 	ret void
+ }
+ 
+ void %test2(sbyte *%A, uint %N) {
+  	;; dest can't alias source since we can't write to source!
+ 	call void %llvm.memmove(sbyte* %A, sbyte* getelementptr ([33 x sbyte]* %S, int 0, int 0), 
+                                 uint %N, uint 1)
+ 	ret void
+ }