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31 lines
832 B
LLVM
31 lines
832 B
LLVM
; RUN: opt -gvn-hoist -S < %s | FileCheck %s
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target datalayout = "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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; Check that all "sub" expressions are hoisted.
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; CHECK-LABEL: @fun
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; CHECK: sub i64
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; CHECK-NOT: sub i64
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define i64 @fun(i8* %out, i8* %end) {
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%1 = icmp ult i8* %out, %end
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br i1 %1, label %2, label %6
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; <label>:2 ; preds = %0
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%3 = ptrtoint i8* %end to i64
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%4 = ptrtoint i8* %out to i64
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%5 = sub i64 %3, %4
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br label %10
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; <label>:6 ; preds = %0
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%7 = ptrtoint i8* %out to i64
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%8 = ptrtoint i8* %end to i64
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%9 = sub i64 %8, %7
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br label %10
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; <label>:10 ; preds = %6, %2
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%.in = phi i64 [ %5, %2 ], [ %9, %6 ]
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%11 = add i64 %.in, 257
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ret i64 %11
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}
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