From 4f0ded009bf6de2da6a2a2022bec03576dcb80ca Mon Sep 17 00:00:00 2001
From: Karl Williamson <khw@cpan.org>
Date: Wed, 1 May 2019 10:41:38 -0600
Subject: [PATCH] pp.c: Add two UNLIKELY()s
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

It should be uncommon to shift beyond a full word

Signed-off-by: Ported to 5.30.0 from
bae047b68c92622bb4bb04499e36cdaa48138909.
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
 pp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pp.c b/pp.c
index 90db3a0..7afb090 100644
--- a/pp.c
+++ b/pp.c
@@ -1979,7 +1979,7 @@ static UV S_uv_shift(UV uv, int shift, bool left)
        shift = -shift;
        left = !left;
    }
-   if (shift >= IV_BITS) {
+   if (UNLIKELY(shift >= IV_BITS)) {
        return 0;
    }
    return left ? uv << shift : uv >> shift;
@@ -1991,7 +1991,7 @@ static IV S_iv_shift(IV iv, int shift, bool left)
        shift = -shift;
        left = !left;
    }
-   if (shift >= IV_BITS) {
+   if (UNLIKELY(shift >= IV_BITS)) {
        return iv < 0 && !left ? -1 : 0;
    }
    return left ? iv << shift : iv >> shift;
-- 
2.20.1