[llvm-commits] CVS: llvm/test/Regression/Transforms/SimplifyLibCalls/StrNCmp.ll

[Reid Spencer]

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

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

Add a new test case for the StrNCmpOptimization.


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Diffs of the changes:  (+26 -0)

 StrNCmp.ll |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+)


Index: llvm/test/Regression/Transforms/SimplifyLibCalls/StrNCmp.ll
diff -c /dev/null llvm/test/Regression/Transforms/SimplifyLibCalls/StrNCmp.ll:1.1
*** /dev/null	Mon May  2 19:50:53 2005
--- llvm/test/Regression/Transforms/SimplifyLibCalls/StrNCmp.ll	Mon May  2 19:50:43 2005
***************
*** 0 ****
--- 1,26 ----
+ ; Test that the StrCmpOptimizer works correctly
+ ; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*strcmp'
+ 
+ declare int %strncmp(sbyte*,sbyte*,int)
+ declare int %puts(sbyte*)
+ %hello = constant [6 x sbyte] c"hello\00"
+ %hell = constant [5 x sbyte] c"hell\00"
+ %null = constant [1 x sbyte] c"\00"
+ 
+ implementation   ; Functions:
+ 
+ int %main () {
+   %hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
+   %hell_p  = getelementptr [5 x sbyte]* %hell, int 0, int 0
+   %null_p  = getelementptr [1 x sbyte]* %null, int 0, int 0
+   %temp1 = call int %strncmp(sbyte* %hello_p, sbyte* %hello_p,int 5)
+   %temp2 = call int %strncmp(sbyte* %null_p, sbyte* %null_p,int 0)
+   %temp3 = call int %strncmp(sbyte* %hello_p, sbyte* %null_p,int 0)
+   %temp4 = call int %strncmp(sbyte* %null_p, sbyte* %hello_p,int 0)
+   %temp5 = call int %strncmp(sbyte* %hell_p, sbyte* %hello_p,int 4)
+   %rslt1 = add int %temp1, %temp2
+   %rslt2 = add int %rslt1, %temp3
+   %rslt3 = add int %rslt2, %temp4
+   %rslt4 = add int %rslt3, %temp5
+   ret int %rslt4
+ }