1 ; Test that the isascii library call simplifier works correctly.
3 ; RUN: opt < %s -instcombine -S | FileCheck %s
5 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"
7 declare i32 @isascii(i32)
9 ; Check isascii(c) -> c <u 128.
11 define i32 @test_simplify1() {
12 ; CHECK-LABEL: @test_simplify1(
13 %ret = call i32 @isascii(i32 127)
15 ; CHECK-NEXT: ret i32 1
18 define i32 @test_simplify2() {
19 ; CHECK-LABEL: @test_simplify2(
20 %ret = call i32 @isascii(i32 128)
22 ; CHECK-NEXT: ret i32 0
25 define i32 @test_simplify3(i32 %x) {
26 ; CHECK-LABEL: @test_simplify3(
27 %ret = call i32 @isascii(i32 %x)
28 ; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ult i32 %x, 128
29 ; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = zext i1 [[CMP]] to i32
31 ; CHECK-NEXT: ret i32 [[ZEXT]]