[llvm-commits] CVS: llvm/test/Regression/Transforms/GCSE/call_pure_function.ll

[Chris Lattner]

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

call_pure_function.ll added (r1.1)

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Log message:

Make sure that pure calls don't kill loads


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Diffs of the changes:  (+13 -0)

Index: llvm/test/Regression/Transforms/GCSE/call_pure_function.ll
diff -c /dev/null llvm/test/Regression/Transforms/GCSE/call_pure_function.ll:1.1
*** /dev/null	Sun Mar 14 22:18:03 2004
--- llvm/test/Regression/Transforms/GCSE/call_pure_function.ll	Sun Mar 14 22:17:53 2004
***************
*** 0 ****
--- 1,13 ----
+ ; RUN: llvm-as < %s | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | not grep sub
+ declare int %strlen(sbyte*)
+ declare void %use(int %X)
+ 
+ sbyte %test(sbyte* %P, sbyte* %Q) {
+ 	%A = load sbyte* %Q
+ 	%X = call int %strlen(sbyte* %P)
+ 	%B = load sbyte* %Q                ;; CSE with A.
+ 	call void %use(int %X)             ;; make strlen not dead
+ 
+ 	%C = sub sbyte %A, %B
+ 	ret sbyte %C
+ }