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https://github.com/c64scene-ar/llvm-6502.git
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a0798ec377
This patch migrates the isdigit optimizations from the simplify-libcalls pass into the instcombine library call simplifier. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168578 91177308-0d34-0410-b5e6-96231b3b80d8
49 lines
1.1 KiB
LLVM
49 lines
1.1 KiB
LLVM
; 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: @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: @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: @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: @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: @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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