33 lines · plain
1; Test that the isascii library call simplifier works correctly.2;3; RUN: opt < %s -passes=instcombine -S | FileCheck %s4 5target 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"6 7declare i32 @isascii(i32)8 9; Check isascii(c) -> c <u 128.10 11define i32 @test_simplify1() {12; CHECK-LABEL: @test_simplify1(13 %ret = call i32 @isascii(i32 127)14 ret i32 %ret15; CHECK-NEXT: ret i32 116}17 18define i32 @test_simplify2() {19; CHECK-LABEL: @test_simplify2(20 %ret = call i32 @isascii(i32 128)21 ret i32 %ret22; CHECK-NEXT: ret i32 023}24 25define 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, 12829; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = zext i1 [[CMP]] to i3230 ret i32 %ret31; CHECK-NEXT: ret i32 [[ZEXT]]32}33