llvm-6502/test/Transforms/SimplifyLibCalls/StrCpy.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

31 lines
1.2 KiB
LLVM

; Test that the StrCpyOptimizer works correctly
; RUN: opt < %s -simplify-libcalls -S | \
; RUN: not grep {call.*strcpy}
; This transformation requires the pointer size, as it assumes that size_t is
; the size of a pointer.
target datalayout = "-p:64:64:64"
@hello = constant [6 x i8] c"hello\00" ; <[6 x i8]*> [#uses=1]
@null = constant [1 x i8] zeroinitializer ; <[1 x i8]*> [#uses=1]
@null_hello = constant [7 x i8] c"\00hello\00" ; <[7 x i8]*> [#uses=1]
declare i8* @strcpy(i8*, i8*)
declare i32 @puts(i8*)
define i32 @main() {
%target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1]
%arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=2]
store i8 0, i8* %arg1
%arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 ; <i8*> [#uses=1]
%rslt1 = call i8* @strcpy( i8* %arg1, i8* %arg2 ) ; <i8*> [#uses=1]
%arg3 = getelementptr [1 x i8]* @null, i32 0, i32 0 ; <i8*> [#uses=1]
%rslt2 = call i8* @strcpy( i8* %rslt1, i8* %arg3 ) ; <i8*> [#uses=1]
%arg4 = getelementptr [7 x i8]* @null_hello, i32 0, i32 0 ; <i8*> [#uses=1]
%rslt3 = call i8* @strcpy( i8* %rslt2, i8* %arg4 ) ; <i8*> [#uses=1]
call i32 @puts( i8* %rslt3 ) ; <i32>:1 [#uses=0]
ret i32 0
}