| ; Test that the toascii library call simplifier works correctly. |
| ; |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| 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" |
| |
| declare i32 @toascii(i32) |
| |
| ; Check isascii(c) -> c & 0x7f. |
| |
| define i32 @test_simplify1() { |
| ; CHECK-LABEL: @test_simplify1( |
| %ret = call i32 @toascii(i32 0) |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 0 |
| } |
| |
| define i32 @test_simplify2() { |
| ; CHECK-LABEL: @test_simplify2( |
| %ret = call i32 @toascii(i32 1) |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 1 |
| } |
| |
| define i32 @test_simplify3() { |
| ; CHECK-LABEL: @test_simplify3( |
| %ret = call i32 @toascii(i32 127) |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 127 |
| } |
| |
| define i32 @test_simplify4() { |
| ; CHECK-LABEL: @test_simplify4( |
| %ret = call i32 @toascii(i32 128) |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 0 |
| } |
| |
| define i32 @test_simplify5() { |
| ; CHECK-LABEL: @test_simplify5( |
| %ret = call i32 @toascii(i32 255) |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 127 |
| } |
| |
| define i32 @test_simplify6() { |
| ; CHECK-LABEL: @test_simplify6( |
| %ret = call i32 @toascii(i32 256) |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 0 |
| } |
| |
| define i32 @test_simplify7(i32 %x) { |
| ; CHECK-LABEL: @test_simplify7( |
| %ret = call i32 @toascii(i32 %x) |
| ; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %x, 127 |
| ret i32 %ret |
| ; CHECK-NEXT: ret i32 [[AND]] |
| } |