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49 lines
1.2 KiB
49 lines
1.2 KiB
4 months ago
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; Test that the isdigit library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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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"
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declare i32 @isdigit(i32)
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; Check isdigit(c) -> (c - '0') <u 10;
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define i32 @test_simplify1() {
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; CHECK-LABEL: @test_simplify1(
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%ret = call i32 @isdigit(i32 47)
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ret i32 %ret
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; CHECK-NEXT: ret i32 0
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}
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define i32 @test_simplify2() {
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; CHECK-LABEL: @test_simplify2(
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%ret = call i32 @isdigit(i32 48)
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ret i32 %ret
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; CHECK-NEXT: ret i32 1
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}
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define i32 @test_simplify3() {
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; CHECK-LABEL: @test_simplify3(
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%ret = call i32 @isdigit(i32 57)
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ret i32 %ret
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; CHECK-NEXT: ret i32 1
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}
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define i32 @test_simplify4() {
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; CHECK-LABEL: @test_simplify4(
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%ret = call i32 @isdigit(i32 58)
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ret i32 %ret
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; CHECK-NEXT: ret i32 0
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}
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define i32 @test_simplify5(i32 %x) {
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; CHECK-LABEL: @test_simplify5(
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%ret = call i32 @isdigit(i32 %x)
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; CHECK-NEXT: [[ADD:%[a-z0-9]+]] = add i32 %x, -48
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; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ult i32 [[ADD]], 10
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; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = zext i1 [[CMP]] to i32
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ret i32 %ret
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; CHECK-NEXT: ret i32 [[ZEXT]]
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}
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