* [gentoo-commits] gentoo commit in src/patchsets/gcc/4.5.1/gentoo: 30_all_gcc-4.5-ppc-msingle-pic-base.patch README.history
@ 2011-04-10 16:27 Mike Frysinger (vapier)
0 siblings, 0 replies; only message in thread
From: Mike Frysinger (vapier) @ 2011-04-10 16:27 UTC (permalink / raw
To: gentoo-commits
vapier 11/04/10 16:27:59
Modified: README.history
Added: 30_all_gcc-4.5-ppc-msingle-pic-base.patch
Log:
backport -msingle-pic-base for PPC support from gcc-4.6 #347281
Revision Changes Path
1.13 src/patchsets/gcc/4.5.1/gentoo/README.history
file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.5.1/gentoo/README.history?rev=1.13&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.5.1/gentoo/README.history?rev=1.13&content-type=text/plain
diff : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.5.1/gentoo/README.history?r1=1.12&r2=1.13
Index: README.history
===================================================================
RCS file: /var/cvsroot/gentoo/src/patchsets/gcc/4.5.1/gentoo/README.history,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -r1.12 -r1.13
--- README.history 29 Nov 2010 20:35:00 -0000 1.12
+++ README.history 10 Apr 2011 16:27:59 -0000 1.13
@@ -1,3 +1,6 @@
+1.5 [pending]
+ + 30_all_gcc-4.5-ppc-msingle-pic-base.patch
+
1.4 29.11.2010
U 90_all_gcc-4.5-graphite-ICE.patch
1.1 src/patchsets/gcc/4.5.1/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch
file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.5.1/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.5.1/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch?rev=1.1&content-type=text/plain
Index: 30_all_gcc-4.5-ppc-msingle-pic-base.patch
===================================================================
https://bugs.gentoo.org/347281
backported from gcc-4.6
From aaf90e018802d80e9cd6ba86c6d03aee1456d737 Mon Sep 17 00:00:00 2001
From: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Date: Sat, 9 Oct 2010 12:45:39 +0200
Subject: [PATCH] PowerPC: Add msingle-pic-base option, gcc 4.5.
Do not generate fPIC/fpic prologue nor save
and restore PIC register.
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
---
gcc/config/rs6000/rs6000.c | 5 +++++
gcc/config/rs6000/rs6000.opt | 4 ++++
gcc/doc/invoke.texi | 9 ++++++++-
3 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 01e6d71..1552ec1 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -18553,8 +18553,10 @@ rs6000_reg_live_or_pic_offset_p (int reg)
return ((df_regs_ever_live_p (reg)
&& (!call_used_regs[reg]
|| (reg == RS6000_PIC_OFFSET_TABLE_REGNUM
+ && !TARGET_SINGLE_PIC_BASE
&& TARGET_TOC && TARGET_MINIMAL_TOC)))
|| (reg == RS6000_PIC_OFFSET_TABLE_REGNUM
+ && !TARGET_SINGLE_PIC_BASE
&& ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic))));
}
@@ -19305,6 +19307,9 @@ rs6000_emit_prologue (void)
insn = emit_insn (generate_set_vrsave (reg, info, 0));
}
+ if (TARGET_SINGLE_PIC_BASE)
+ return; /* Do not set PIC register */
+
/* If we are using RS6000_PIC_OFFSET_TABLE_REGNUM, we need to set it up. */
if ((TARGET_TOC && TARGET_MINIMAL_TOC && get_pool_size () != 0)
|| (DEFAULT_ABI == ABI_V4
diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt
index 63f0f8c..1c97c94 100644
--- a/gcc/config/rs6000/rs6000.opt
+++ b/gcc/config/rs6000/rs6000.opt
@@ -163,6 +163,10 @@ mupdate
Target Report RejectNegative InverseMask(NO_UPDATE, UPDATE)
Generate load/store with update instructions
+msingle-pic-base
+Target Report Var(TARGET_SINGLE_PIC_BASE) Init(0)
+Do not load the PIC register in function prologues
+
mavoid-indexed-addresses
Target Report Var(TARGET_AVOID_XFORM) Init(-1)
Avoid generation of indexed load/store instructions when possible
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index a1846dc..32e17b6 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -765,7 +765,7 @@ See RS/6000 and PowerPC Options.
-mstrict-align -mno-strict-align -mrelocatable @gol
-mno-relocatable -mrelocatable-lib -mno-relocatable-lib @gol
-mtoc -mno-toc -mlittle -mlittle-endian -mbig -mbig-endian @gol
--mdynamic-no-pic -maltivec -mswdiv @gol
+-mdynamic-no-pic -maltivec -mswdiv -msingle-pic-base @gol
-mprioritize-restricted-insns=@var{priority} @gol
-msched-costly-dep=@var{dependence_type} @gol
-minsert-sched-nops=@var{scheme} @gol
@@ -15221,6 +15221,13 @@ relocatable, but that its external references are relocatable. The
resulting code is suitable for applications, but not shared
libraries.
+@item -msingle-pic-base
+@opindex msingle-pic-base
+Treat the register used for PIC addressing as read-only, rather than
+loading it in the prologue for each function. The run-time system is
+responsible for initializing this register with an appropriate value
+before execution begins.
+
@item -mprioritize-restricted-insns=@var{priority}
@opindex mprioritize-restricted-insns
This option controls the priority that is assigned to
--
1.7.2.2
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2011-04-10 16:28 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-04-10 16:27 [gentoo-commits] gentoo commit in src/patchsets/gcc/4.5.1/gentoo: 30_all_gcc-4.5-ppc-msingle-pic-base.patch README.history Mike Frysinger (vapier)
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox