Re: [PATCH] i386: Fix conversion of move to/from AX_REG into xchg [PR106707]

["H.J. Lu" <hjl.tools@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 731 bytes --]

On Thu, Sep 1, 2022 at 11:23 AM Uros Bizjak via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> The conversion of a move pattern where both operands are AX_REG
> should be prevented.
>
> 2022-09-01  Uroš Bizjak  <ubizjak@gmail.com>
>
> gcc/ChangeLog:
>
>     PR target/106707
>     * config/i386/i386.md (moves to/from AX_REG into xchg peephole2):
>     Do not convert a move pattern where both operands are AX_REG.
>
> gcc/testsuite/ChangeLog:
>
>     PR target/106707
>     * gcc.target/i386/pr106707.c: New test.
>
> Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
>
> Pushed to master.
>
> Uros.

I am checking in this to replace long with long long for 64-bit integer.

-- 
H.J.

[-- Attachment #2: 0001-i386-Replace-long-with-long-long-for-64-bit-integer.patch --]
[-- Type: text/x-patch, Size: 1006 bytes --]

From 01ca233f7a8ab683968d1ae2eb6e9f1049e86ad2 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 1 Sep 2022 15:18:18 -0700
Subject: [PATCH] i386: Replace long with long long for 64-bit integer

Replace long with long long for 64-bit integer since long may be 32
bits.

	PR target/106707
	* gcc.target/i386/pr106707.c (foo): Replace long with long long.
---
 gcc/testsuite/gcc.target/i386/pr106707.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/testsuite/gcc.target/i386/pr106707.c b/gcc/testsuite/gcc.target/i386/pr106707.c
index a127ccd4679..2e8ebaafb33 100644
--- a/gcc/testsuite/gcc.target/i386/pr106707.c
+++ b/gcc/testsuite/gcc.target/i386/pr106707.c
@@ -10,9 +10,9 @@ unsigned x, y;
 V v;
 
 void
-foo (long a)
+foo (long long a)
 {
-  long l = a != x;
+  long long l = a != x;
   int i = __builtin_add_overflow_p (y * ii, 0, 0);
   V u = ii < x | v, w = x <= u < i & y <= x / ii;
   v = __builtin_shufflevector (v, w, 1, 2) + (V) l;
-- 
2.37.2