1 ; Test that the isdigit 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 @isdigit(i32) 8 9 ; Check isdigit(c) -> (c - '0') <u 10; 10 11 define i32 @test_simplify1() { 12 ; CHECK-LABEL: @test_simplify1( 13 %ret = call i32 @isdigit(i32 47) 14 ret i32 %ret 15 ; CHECK-NEXT: ret i32 0 16 } 17 18 define i32 @test_simplify2() { 19 ; CHECK-LABEL: @test_simplify2( 20 %ret = call i32 @isdigit(i32 48) 21 ret i32 %ret 22 ; CHECK-NEXT: ret i32 1 23 } 24 25 define i32 @test_simplify3() { 26 ; CHECK-LABEL: @test_simplify3( 27 %ret = call i32 @isdigit(i32 57) 28 ret i32 %ret 29 ; CHECK-NEXT: ret i32 1 30 } 31 32 define i32 @test_simplify4() { 33 ; CHECK-LABEL: @test_simplify4( 34 %ret = call i32 @isdigit(i32 58) 35 ret i32 %ret 36 ; CHECK-NEXT: ret i32 0 37 } 38 39 define i32 @test_simplify5(i32 %x) { 40 ; CHECK-LABEL: @test_simplify5( 41 42 %ret = call i32 @isdigit(i32 %x) 43 ; CHECK-NEXT: [[ADD:%[a-z0-9]+]] = add i32 %x, -48 44 ; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ult i32 [[ADD]], 10 45 ; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = zext i1 [[CMP]] to i32 46 ret i32 %ret 47 ; CHECK-NEXT: ret i32 [[ZEXT]] 48 } 49
