llvm-mirror/test/Transforms/InstCombine/disable-builtin.ll
Dimitry Andric 45e1f99e13 Add -disable-builtin option to opt
Summary:
The option allows to disable specific target library builtin functions,
instead of -disable-simplify-libcalls, which disables all of them.

This is a prerequisite for D70143, which fixes PR43081.

Reviewers: xbolva00, spatel, jdoerfert, efriedma

Reviewed By: efriedma

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70193
2019-11-13 21:32:49 +01:00

22 lines
748 B
LLVM

; Test that -disable-builtin works correctly.
;
; RUN: opt < %s -instcombine -disable-builtin strcat -S | FileCheck %s
;
; RUN: not opt < %s -instcombine -disable-builtin foobar -S 2>&1 | FileCheck --check-prefix=FOOBAR %s
; FOOBAR: cannot disable nonexistent builtin function foobar
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
@empty = constant [1 x i8] c"\00", align 1
declare i8* @strcat(i8*, i8*)
define i8* @test_strcat(i8* %x) {
; CHECK-LABEL: @test_strcat(
%empty = getelementptr [1 x i8], [1 x i8]* @empty, i32 0, i32 0
%ret = call i8* @strcat(i8* %x, i8* %empty)
ret i8* %ret
; CHECK: call i8* @strcat
}