From bca2fc317e6b58a72265306de7a4557ee51602ac Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Sun, 10 Apr 2011 16:27:59 +0000 Subject: backport -msingle-pic-base for PPC support from gcc-4.6 #347281 --- .../30_all_gcc-4.5-ppc-msingle-pic-base.patch | 89 ++++++++++++++++++++++ 4.5.0/gentoo/README.history | 1 + 2 files changed, 90 insertions(+) create mode 100644 4.5.0/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch (limited to '4.5.0') diff --git a/4.5.0/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch b/4.5.0/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch new file mode 100644 index 0000000..217f4f4 --- /dev/null +++ b/4.5.0/gentoo/30_all_gcc-4.5-ppc-msingle-pic-base.patch @@ -0,0 +1,89 @@ +https://bugs.gentoo.org/347281 + +backported from gcc-4.6 + +From aaf90e018802d80e9cd6ba86c6d03aee1456d737 Mon Sep 17 00:00:00 2001 +From: Joakim Tjernlund +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 +--- + 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 + diff --git a/4.5.0/gentoo/README.history b/4.5.0/gentoo/README.history index 8752c6c..706b36c 100644 --- a/4.5.0/gentoo/README.history +++ b/4.5.0/gentoo/README.history @@ -1,4 +1,5 @@ 1.5 [pending] + + 30_all_gcc-4.5-ppc-msingle-pic-base.patch U 53_all_gcc4-superh-default-multilib.patch - 94_all_gcc-4.3.3-pch-nostdinc-tr1.patch + 94_all_gcc-4.5-pch-nostdinc.patch -- cgit v1.2.3-65-gdbad