| Meador Inge | a62a39e | 2012-11-26 03:10:07 +0000 | [diff] [blame] | 1 | ; Test that the isascii library call simplifier works correctly. |
| 2 | ; |
| 3 | ; RUN: opt < %s -instcombine -S | FileCheck %s |
| 4 | |
| 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" |
| 6 | |
| 7 | declare i32 @isascii(i32) |
| 8 | |
| 9 | ; Check isascii(c) -> c <u 128. |
| 10 | |
| 11 | define i32 @test_simplify1() { |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 12 | ; CHECK-LABEL: @test_simplify1( |
| Meador Inge | a62a39e | 2012-11-26 03:10:07 +0000 | [diff] [blame] | 13 | %ret = call i32 @isascii(i32 127) |
| 14 | ret i32 %ret |
| 15 | ; CHECK-NEXT: ret i32 1 |
| 16 | } |
| 17 | |
| 18 | define i32 @test_simplify2() { |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 19 | ; CHECK-LABEL: @test_simplify2( |
| Meador Inge | a62a39e | 2012-11-26 03:10:07 +0000 | [diff] [blame] | 20 | %ret = call i32 @isascii(i32 128) |
| 21 | ret i32 %ret |
| 22 | ; CHECK-NEXT: ret i32 0 |
| 23 | } |
| 24 | |
| 25 | define i32 @test_simplify3(i32 %x) { |
| Stephen Lin | c1c7a13 | 2013-07-14 01:42:54 +0000 | [diff] [blame] | 26 | ; CHECK-LABEL: @test_simplify3( |
| Meador Inge | a62a39e | 2012-11-26 03:10:07 +0000 | [diff] [blame] | 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 |
| 30 | ret i32 %ret |
| 31 | ; CHECK-NEXT: ret i32 [[ZEXT]] |
| 32 | } |