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https://github.com/c64scene-ar/llvm-6502.git
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26 lines
812 B
LLVM
26 lines
812 B
LLVM
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; do not replace a 'select' with 'or' in 'select - cmp - br' sequence
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; RUN: opt -instcombine -S < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @f(i32)
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define void @test(i32 %len) {
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entry:
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%cmp = icmp ult i32 %len, 8
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%cond = select i1 %cmp, i32 %len, i32 8
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%cmp11 = icmp ult i32 0, %cond
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br i1 %cmp11, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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tail call void @f(i32 %cond)
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%inc = add i32 %i.02, 1
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%cmp1 = icmp ult i32 %inc, %cond
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br i1 %cmp1, label %for.body, label %for.end
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for.end: ; preds = %for.body, %entry
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ret void
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; CHECK: select
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}
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