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Add a testcase for optimizing the strcpy libcall.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21615 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2005-04-29 06:01:28 +00:00
parent df4945bcb5
commit 45254f7be0
1 changed files with 24 additions and 0 deletions
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test/Transforms/SimplifyLibCalls/StrCpy.ll Normal file
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; Test that the StrCatOptimizer works correctly
; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*strcat'
declare sbyte* %strcpy(sbyte*,sbyte*)
declare int %puts(sbyte*)
%hello = constant [6 x sbyte] c"hello\00"
%null = constant [1 x sbyte] c"\00"
%null_hello = constant [7 x sbyte] c"\00hello\00"
implementation ; Functions:
int %main () {
%target = alloca [1024 x sbyte]
%arg1 = getelementptr [1024 x sbyte]* %target, int 0, int 0
store sbyte 0, sbyte* %arg1
%arg2 = getelementptr [6 x sbyte]* %hello, int 0, int 0
%rslt1 = call sbyte* %strcpy(sbyte* %arg1, sbyte* %arg2)
%arg3 = getelementptr [1 x sbyte]* %null, int 0, int 0
%rslt2 = call sbyte* %strcpy(sbyte* %rslt1, sbyte* %arg3)
%arg4 = getelementptr [7 x sbyte]* %null_hello, int 0, int 0
%rslt3 = call sbyte* %strcpy(sbyte* %rslt2, sbyte* %arg4)
call int %puts(sbyte* %rslt3)
ret int 0
}