43 lines
1.1 KiB
Diff
43 lines
1.1 KiB
Diff
From 4f0ded009bf6de2da6a2a2022bec03576dcb80ca Mon Sep 17 00:00:00 2001
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From: Karl Williamson <khw@cpan.org>
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Date: Wed, 1 May 2019 10:41:38 -0600
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Subject: [PATCH] pp.c: Add two UNLIKELY()s
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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It should be uncommon to shift beyond a full word
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Signed-off-by: Ported to 5.30.0 from
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bae047b68c92622bb4bb04499e36cdaa48138909.
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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pp.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/pp.c b/pp.c
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index 90db3a0..7afb090 100644
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--- a/pp.c
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+++ b/pp.c
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@@ -1979,7 +1979,7 @@ static UV S_uv_shift(UV uv, int shift, bool left)
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shift = -shift;
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left = !left;
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}
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- if (shift >= IV_BITS) {
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+ if (UNLIKELY(shift >= IV_BITS)) {
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return 0;
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}
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return left ? uv << shift : uv >> shift;
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@@ -1991,7 +1991,7 @@ static IV S_iv_shift(IV iv, int shift, bool left)
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shift = -shift;
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left = !left;
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}
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- if (shift >= IV_BITS) {
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+ if (UNLIKELY(shift >= IV_BITS)) {
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return iv < 0 && !left ? -1 : 0;
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}
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return left ? iv << shift : iv >> shift;
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--
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2.20.1
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