[llvm-commits] CVS: llvm/test/Regression/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll

[Chris Lattner]

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

2003-08-17-FoldSwitch.ll added (r1.1)

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Log message:

New testcase to ensure that switch folding happens correctly


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Diffs of the changes:

Index: llvm/test/Regression/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll
diff -c /dev/null llvm/test/Regression/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll:1.1
*** /dev/null	Sun Aug 17 15:19:41 2003
--- llvm/test/Regression/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll	Sun Aug 17 15:19:31 2003
***************
*** 0 ****
--- 1,49 ----
+ ; RUN: as < %s | opt -simplifycfg | dis | not grep switch
+ 
+ int %test1() {   ; Test normal folding
+ 	switch uint 5, label %Default [
+ 		uint 0, label %Foo
+ 		uint 1, label %Bar
+ 		uint 2, label %Baz
+ 		uint 5, label %TheDest
+ 	]
+ Default:ret int -1
+ Foo:	ret int -2
+ Bar:	ret int -3
+ Baz: 	ret int -4
+ TheDest:ret int 1234
+ }
+ 
+ int %test2() {   ; Test folding to default dest
+ 	switch uint 3, label %Default [
+ 		uint 0, label %Foo
+ 		uint 1, label %Bar
+ 		uint 2, label %Baz
+ 		uint 5, label %TheDest
+ 	]
+ Default:ret int 1234
+ Foo:	ret int -2
+ Bar:	ret int -5
+ Baz: 	ret int -6
+ TheDest:ret int -8
+ }
+ 
+ int %test3(bool %C) {   ; Test folding all to same dest
+ 	br bool %C, label %Start, label %TheDest
+ Start:
+ 	switch uint 3, label %TheDest [
+ 		uint 0, label %TheDest
+ 		uint 1, label %TheDest
+ 		uint 2, label %TheDest
+ 		uint 5, label %TheDest
+ 	]
+ TheDest: ret int 1234
+ }
+ 
+ int %test4(uint %C) {   ; Test folding switch -> branch
+ 	switch uint %C, label %L1 [
+ 		uint 0, label %L2
+ 	]
+ L1:	ret int 0
+ L2:	ret int 1
+ }