[Backport] Backport patch from gcc-14.3.0

GCC14-1003-i386-Add-non-optimize-prefetchi-intrins.patch

@@ -0,0 +1,88 @@
+From b4524c4430ba9771265bd9fc31e69a3f35dfe117 Mon Sep 17 00:00:00 2001
+From: Haochen Jiang <haochen.jiang@intel.com>
+Date: Thu, 25 Jul 2024 16:16:05 +0800
+Subject: [PATCH] i386: Add non-optimize prefetchi intrins
+
+Under -O0, with the "newly" introduced intrins, the variable will be
+transformed as mem instead of the origin symbol_ref. The compiler will
+then treat the operand as invalid and turn the operation into nop, which
+is not expected. Use macro for non-optimize to keep the variable as
+symbol_ref just as how prefetch intrin does.
+
+gcc/ChangeLog:
+
+	* config/i386/prfchiintrin.h
+	(_m_prefetchit0): Add macro for non-optimized option.
+	(_m_prefetchit1): Ditto.
+
+gcc/testsuite/ChangeLog:
+
+	* gcc.target/i386/prefetchi-1b.c: New test.
+---
+ gcc/config/i386/prfchiintrin.h               |  9 +++++++
+ gcc/testsuite/gcc.target/i386/prefetchi-1b.c | 26 ++++++++++++++++++++
+ 2 files changed, 35 insertions(+)
+ create mode 100644 gcc/testsuite/gcc.target/i386/prefetchi-1b.c
+
+diff --git a/gcc/config/i386/prfchiintrin.h b/gcc/config/i386/prfchiintrin.h
+index dfca89c7d16..d6580e504c0 100644
+--- a/gcc/config/i386/prfchiintrin.h
++++ b/gcc/config/i386/prfchiintrin.h
+@@ -37,6 +37,7 @@
+ #define __DISABLE_PREFETCHI__
+ #endif /* __PREFETCHI__ */
+ 
++#ifdef __OPTIMIZE__
+ extern __inline void
+ __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+ _m_prefetchit0 (void* __P)
+@@ -50,6 +51,14 @@ _m_prefetchit1 (void* __P)
+ {
+   __builtin_ia32_prefetchi (__P, 2);
+ }
++#else
++#define _m_prefetchit0(P)	\
++  __builtin_ia32_prefetchi(P, 3)
++
++#define _m_prefetchit1(P)	\
++  __builtin_ia32_prefetchi(P, 2)
++
++#endif
+ 
+ #ifdef __DISABLE_PREFETCHI__
+ #undef __DISABLE_PREFETCHI__
+diff --git a/gcc/testsuite/gcc.target/i386/prefetchi-1b.c b/gcc/testsuite/gcc.target/i386/prefetchi-1b.c
+new file mode 100644
+index 00000000000..93139554d3c
+--- /dev/null
++++ b/gcc/testsuite/gcc.target/i386/prefetchi-1b.c
+@@ -0,0 +1,26 @@
++/* { dg-do compile { target { ! ia32 } } } */
++/* { dg-options "-mprefetchi -O0" } */
++/* { dg-final { scan-assembler-times "\[ \\t\]+prefetchit0\[ \\t\]+bar\\(%rip\\)" 1 } } */
++/* { dg-final { scan-assembler-times "\[ \\t\]+prefetchit1\[ \\t\]+bar\\(%rip\\)" 1 } } */
++
++#include <x86intrin.h>
++
++int
++bar (int a)
++{
++  return a + 1;
++}
++
++int
++foo1 (int b)
++{
++  _m_prefetchit0 (bar);
++  return bar (b) + 1;
++}
++
++int
++foo2 (int b)
++{
++  _m_prefetchit1 (bar);
++  return bar (b) + 1;
++}
+-- 
+2.31.1
+

gcc-14.spec

@@ -90,7 +90,7 @@
 Summary: Various compilers (C, C++, Objective-C, ...)
 Name: %{?_scl_prefix}gcc%{gcc_ver}
 Version: 14.2.1
-Release: 1
+Release: 2
 # libgcc, libgfortran, libgomp, libstdc++ and crtstuff have
 # GCC Runtime Exception.
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
@@ -171,6 +171,7 @@ Provides: %{?_scl_prefix}gcc%{gcc_ver}(major) = %{gcc_major}
 
 Patch1001: GCC14-1001-libstdc++-compat.patch
 Patch1002: GCC14-1002-change-gcc-version.patch
+Patch1003: GCC14-1003-i386-Add-non-optimize-prefetchi-intrins.patch
 # On ARM EABI systems, we do want -gnueabi to be part of the
 # target triple.
 %global nonsharedver 48
@@ -2241,6 +2242,9 @@ end
 %doc rpm.doc/changelogs/libcc1/ChangeLog*
 
 %changelog
+* Thu Aug 22 2024 Hu, Lin <lin1.hu@intel.com> - 14.2.1-2
+- [Backport] Backport fix prefetchi from gcc-14.3.0
+
 * Mon Aug 12 2024 zhaoshujian <zhaoshujian@huawei.com> - 14.2.1-1
 - Init gcc toolset gcc 14.2.1