Blame SOURCES/perl-5.30.0-pp.c-Add-two-UNLIKELY-s.patch
|
 |
78f1eb |
From 4f0ded009bf6de2da6a2a2022bec03576dcb80ca Mon Sep 17 00:00:00 2001
|
|
|
78f1eb |
From: Karl Williamson <khw@cpan.org>
|
|
|
78f1eb |
Date: Wed, 1 May 2019 10:41:38 -0600
|
|
|
78f1eb |
Subject: [PATCH] pp.c: Add two UNLIKELY()s
|
|
|
78f1eb |
MIME-Version: 1.0
|
|
|
78f1eb |
Content-Type: text/plain; charset=UTF-8
|
|
|
78f1eb |
Content-Transfer-Encoding: 8bit
|
|
|
78f1eb |
|
|
|
78f1eb |
It should be uncommon to shift beyond a full word
|
|
|
78f1eb |
|
|
|
78f1eb |
Signed-off-by: Ported to 5.30.0 from
|
|
|
78f1eb |
bae047b68c92622bb4bb04499e36cdaa48138909.
|
|
|
78f1eb |
Signed-off-by: Petr Písař <ppisar@redhat.com>
|
|
|
78f1eb |
---
|
|
|
78f1eb |
pp.c | 4 ++--
|
|
|
78f1eb |
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
78f1eb |
|
|
|
78f1eb |
diff --git a/pp.c b/pp.c
|
|
|
78f1eb |
index 90db3a0..7afb090 100644
|
|
|
78f1eb |
--- a/pp.c
|
|
|
78f1eb |
+++ b/pp.c
|
|
|
78f1eb |
@@ -1979,7 +1979,7 @@ static UV S_uv_shift(UV uv, int shift, bool left)
|
|
|
78f1eb |
shift = -shift;
|
|
|
78f1eb |
left = !left;
|
|
|
78f1eb |
}
|
|
|
78f1eb |
- if (shift >= IV_BITS) {
|
|
|
78f1eb |
+ if (UNLIKELY(shift >= IV_BITS)) {
|
|
|
78f1eb |
return 0;
|
|
|
78f1eb |
}
|
|
|
78f1eb |
return left ? uv << shift : uv >> shift;
|
|
|
78f1eb |
@@ -1991,7 +1991,7 @@ static IV S_iv_shift(IV iv, int shift, bool left)
|
|
|
78f1eb |
shift = -shift;
|
|
|
78f1eb |
left = !left;
|
|
|
78f1eb |
}
|
|
|
78f1eb |
- if (shift >= IV_BITS) {
|
|
|
78f1eb |
+ if (UNLIKELY(shift >= IV_BITS)) {
|
|
|
78f1eb |
return iv < 0 && !left ? -1 : 0;
|
|
|
78f1eb |
}
|
|
|
78f1eb |
return left ? iv << shift : iv >> shift;
|
|
|
78f1eb |
--
|
|
|
78f1eb |
2.20.1
|
|
|
78f1eb |
|