derek.holloway
7502bf64a4
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33 lines
874 B
LLVM
33 lines
874 B
LLVM
; Test that the isascii library call simplifier works correctly.
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;
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; RUN: opt < %s -passes=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 @isascii(i32)
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; Check isascii(c) -> c <u 128.
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define i32 @test_simplify1() {
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; CHECK-LABEL: @test_simplify1(
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%ret = call i32 @isascii(i32 127)
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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_simplify2() {
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; CHECK-LABEL: @test_simplify2(
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%ret = call i32 @isascii(i32 128)
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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_simplify3(i32 %x) {
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; CHECK-LABEL: @test_simplify3(
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%ret = call i32 @isascii(i32 %x)
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; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ult i32 %x, 128
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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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