mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-06 21:05:51 +00:00
73d8a5864f
This patch migrates the strcat and strncat optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165874 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.4 KiB
LLVM
54 lines
1.4 KiB
LLVM
; Test that the strncat libcall simplifier works correctly.
|
|
;
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
|
|
|
|
@hello = constant [6 x i8] c"hello\00"
|
|
@empty = constant [1 x i8] c"\00"
|
|
@a = common global [32 x i8] zeroinitializer, align 1
|
|
|
|
declare i8* @strncat(i8*, i8*, i32)
|
|
|
|
define void @test_simplify1() {
|
|
; CHECK: @test_simplify1
|
|
; CHECK-NOT: call i8* @strncat
|
|
; CHECK: ret void
|
|
|
|
%dst = getelementptr [32 x i8]* @a, i32 0, i32 0
|
|
%src = getelementptr [6 x i8]* @hello, i32 0, i32 0
|
|
call i8* @strncat(i8* %dst, i8* %src, i32 13)
|
|
ret void
|
|
}
|
|
|
|
define void @test_simplify2() {
|
|
; CHECK: @test_simplify2
|
|
; CHECK-NEXT: ret void
|
|
|
|
%dst = getelementptr [32 x i8]* @a, i32 0, i32 0
|
|
%src = getelementptr [1 x i8]* @empty, i32 0, i32 0
|
|
call i8* @strncat(i8* %dst, i8* %src, i32 13)
|
|
ret void
|
|
}
|
|
|
|
define void @test_simplify3() {
|
|
; CHECK: @test_simplify3
|
|
; CHECK-NEXT: ret void
|
|
|
|
%dst = getelementptr [32 x i8]* @a, i32 0, i32 0
|
|
%src = getelementptr [6 x i8]* @hello, i32 0, i32 0
|
|
call i8* @strncat(i8* %dst, i8* %src, i32 0)
|
|
ret void
|
|
}
|
|
|
|
define void @test_nosimplify1() {
|
|
; CHECK: @test_nosimplify1
|
|
; CHECK: call i8* @strncat
|
|
; CHECK: ret void
|
|
|
|
%dst = getelementptr [32 x i8]* @a, i32 0, i32 0
|
|
%src = getelementptr [6 x i8]* @hello, i32 0, i32 0
|
|
call i8* @strncat(i8* %dst, i8* %src, i32 1)
|
|
ret void
|
|
}
|