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Add strpbrk folding to SimplifyLibCalls.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115111 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2010-09-29 23:52:12 +00:00
parent 28815c4b64
commit 05f585e28b
2 changed files with 67 additions and 7 deletions
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25
test/Transforms/SimplifyLibCalls/StrPBrk.ll Normal file
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@@ -0,0 +1,25 @@
; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
target datalayout = "-p:64:64:64"
@hello = constant [12 x i8] c"hello world\00"
@w = constant [2 x i8] c"w\00"
@null = constant [1 x i8] zeroinitializer
declare i8* @strpbrk(i8*, i8*)
define void @test(i8* %s1, i8* %s2) {
%hello_p = getelementptr [12 x i8]* @hello, i32 0, i32 0
%w_p = getelementptr [2 x i8]* @w, i32 0, i32 0
%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
%test1 = call i8* @strpbrk(i8* %null_p, i8* %s2)
%test2 = call i8* @strpbrk(i8* %s1, i8* %null_p)
; CHECK-NOT: call i8* @strpbrk
%test3 = call i8* @strpbrk(i8* %s1, i8* %w_p)
; CHECK: call i8* @strchr(i8* %s1, i32 119)
%test4 = call i8* @strpbrk(i8* %hello_p, i8* %w_p)
; CHECK: getelementptr i8* %hello_p, i64 6
%test5 = call i8* @strpbrk(i8* %s1, i8* %s2)
; CHECK: call i8* @strpbrk(i8* %s1, i8* %s2)
ret void
}