1 ; Test that the strcspn library call simplifier works correctly.
3 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
5 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"
7 @null = constant [1 x i8] zeroinitializer
9 declare double @strcspn(ptr, ptr)
11 ; Check that strcspn functions with the wrong prototype aren't simplified.
13 define double @test_no_simplify1(ptr %pat) {
14 ; CHECK-LABEL: @test_no_simplify1(
16 %ret = call double @strcspn(ptr @null, ptr %pat)
17 ; CHECK-NEXT: call double @strcspn
19 ; CHECK-NEXT: ret double %ret