From d2db880222cfc8ac471a1fa4c3a5a83309c1d595 Mon Sep 17 00:00:00 2001 From: Reid Spencer Date: Tue, 3 May 2005 00:50:43 +0000 Subject: Add a new test case for the StrNCmpOptimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21658 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/SimplifyLibCalls/StrNCmp.ll | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 test/Transforms/SimplifyLibCalls/StrNCmp.ll (limited to 'test/Transforms/SimplifyLibCalls/StrNCmp.ll') diff --git a/test/Transforms/SimplifyLibCalls/StrNCmp.ll b/test/Transforms/SimplifyLibCalls/StrNCmp.ll new file mode 100644 index 0000000..1b16149 --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/StrNCmp.ll @@ -0,0 +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 +} -- cgit v1.1