1; Test that the isdigit library call simplifier works correctly. 2; 3; RUN: opt < %s -instcombine -S | FileCheck %s 4 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 @isdigit(i32) 8 9; Check isdigit(c) -> (c - '0') <u 10; 10 11define 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 18define 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 25define 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 32define 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 39define 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