[llvm-commits] CVS: llvm/test/Regression/Transforms/ADCE/2003-12-19-MergeReturn.llx

[Chris Lattner]

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

2003-12-19-MergeReturn.llx added (r1.1)

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Log message:

New testcase for missed optimization


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Diffs of the changes:  (+28 -0)

Index: llvm/test/Regression/Transforms/ADCE/2003-12-19-MergeReturn.llx
diff -c /dev/null llvm/test/Regression/Transforms/ADCE/2003-12-19-MergeReturn.llx:1.1
*** /dev/null	Fri Dec 19 03:08:25 2003
--- llvm/test/Regression/Transforms/ADCE/2003-12-19-MergeReturn.llx	Fri Dec 19 03:08:15 2003
***************
*** 0 ****
--- 1,28 ----
+ ; This testcase was failing because without merging the return blocks, ADCE
+ ; didn't know that it could get rid of the then.0 block.
+ 
+ ; RUN: llvm-as < %s | opt -adce | llvm-dis | not grep load
+ 
+ 
+ implementation   ; Functions:
+ 
+ void %main(uint %argc, sbyte** %argv) {
+ entry:
+ 	call void %__main( )
+ 	%tmp.1 = setle uint %argc, 5		; <bool> [#uses=1]
+ 	br bool %tmp.1, label %then.0, label %return
+ 
+ then.0:		; preds = %entry
+ 	%tmp.8 = load sbyte** %argv		; <sbyte*> [#uses=1]
+ 	%tmp.10 = load sbyte* %tmp.8		; <sbyte> [#uses=1]
+ 	%tmp.11 = seteq sbyte %tmp.10, 98		; <bool> [#uses=1]
+ 	br bool %tmp.11, label %then.1, label %return
+ 
+ then.1:		; preds = %then.0
+ 	ret void
+ 
+ return:		; preds = %entry, %then.0
+ 	ret void
+ }
+ 
+ declare void %__main()