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author | Dave Cobbley <david.j.cobbley@linux.intel.com> | 2018-08-14 20:05:37 +0300 |
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committer | Brad Bishop <bradleyb@fuzziesquirrel.com> | 2018-08-23 04:26:31 +0300 |
commit | eb8dc40360f0cfef56fb6947cc817a547d6d9bc6 (patch) | |
tree | de291a73dc37168da6370e2cf16c347d1eba9df8 /poky/meta/recipes-devtools/gcc/gcc-7.3/0001-PR-rtl-optimization-83030.patch | |
parent | 9c3cf826d853102535ead04cebc2d6023eff3032 (diff) | |
download | openbmc-eb8dc40360f0cfef56fb6947cc817a547d6d9bc6.tar.xz |
[Subtree] Removing import-layers directory
As part of the move to subtrees, need to bring all the import layers
content to the top level.
Change-Id: I4a163d10898cbc6e11c27f776f60e1a470049d8f
Signed-off-by: Dave Cobbley <david.j.cobbley@linux.intel.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Diffstat (limited to 'poky/meta/recipes-devtools/gcc/gcc-7.3/0001-PR-rtl-optimization-83030.patch')
-rw-r--r-- | poky/meta/recipes-devtools/gcc/gcc-7.3/0001-PR-rtl-optimization-83030.patch | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/gcc/gcc-7.3/0001-PR-rtl-optimization-83030.patch b/poky/meta/recipes-devtools/gcc/gcc-7.3/0001-PR-rtl-optimization-83030.patch new file mode 100644 index 000000000..71f7988ea --- /dev/null +++ b/poky/meta/recipes-devtools/gcc/gcc-7.3/0001-PR-rtl-optimization-83030.patch @@ -0,0 +1,272 @@ +From f5c4a9440f15ccf6775659910a2014a5494ee86e Mon Sep 17 00:00:00 2001 +From: ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Wed, 22 Nov 2017 21:43:22 +0000 +Subject: [PATCH] PR rtl-optimization/83030 * doc/rtl.texi (Flags + in an RTL Expression): Alphabetize, add entry for CROSSING_JUMP_P and + mention usage of 'jump' for JUMP_INSNs. (Insns): Delete entry for + REG_CROSSING_JUMP in register notes. * bb-reorder.c + (update_crossing_jump_flags): Do not test whether the CROSSING_JUMP_P flag + is already set before setting it. * cfgrtl.c (fixup_partition_crossing): + Likewise. * reorg.c (relax_delay_slots): Do not consider a + CROSSING_JUMP_P insn as useless. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255083 138bc75d-0d04-0410-961f-82ee72b054a4 + +Upstream-Status: Backport + +This patch removes changes to Changelog from the original upstream patch. +This will help us avoid conflicts. + +Original backport to GCC 7.x by Amruta Pawar <Amruta.Pawar@kpit.com> + +Signed-off-by: Mark Hatle <mark.hatle@windriver.com> + +--- + gcc/bb-reorder.c | 5 +-- + gcc/cfgrtl.c | 3 +- + gcc/doc/rtl.texi | 129 ++++++++++++++++++++++++++++--------------------------- + gcc/reorg.c | 7 +-- + 5 files changed, 84 insertions(+), 72 deletions(-) + +diff --git a/gcc/bb-reorder.c b/gcc/bb-reorder.c +index 55e6dc6..794283c 100644 +--- a/gcc/bb-reorder.c ++++ b/gcc/bb-reorder.c +@@ -2236,10 +2236,7 @@ update_crossing_jump_flags (void) + FOR_EACH_EDGE (e, ei, bb->succs) + if (e->flags & EDGE_CROSSING) + { +- if (JUMP_P (BB_END (bb)) +- /* Some flags were added during fix_up_fall_thru_edges, via +- force_nonfallthru_and_redirect. */ +- && !CROSSING_JUMP_P (BB_END (bb))) ++ if (JUMP_P (BB_END (bb))) + CROSSING_JUMP_P (BB_END (bb)) = 1; + break; + } +diff --git a/gcc/cfgrtl.c b/gcc/cfgrtl.c +index d6e5ac0..a2ad075 100644 +--- a/gcc/cfgrtl.c ++++ b/gcc/cfgrtl.c +@@ -1334,8 +1334,7 @@ fixup_partition_crossing (edge e) + if (BB_PARTITION (e->src) != BB_PARTITION (e->dest)) + { + e->flags |= EDGE_CROSSING; +- if (JUMP_P (BB_END (e->src)) +- && !CROSSING_JUMP_P (BB_END (e->src))) ++ if (JUMP_P (BB_END (e->src))) + CROSSING_JUMP_P (BB_END (e->src)) = 1; + } + else if (BB_PARTITION (e->src) == BB_PARTITION (e->dest)) +diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi +index 21524f5..a58eedc 100644 +--- a/gcc/doc/rtl.texi ++++ b/gcc/doc/rtl.texi +@@ -565,6 +565,16 @@ that are used in certain types of expression. Most often they + are accessed with the following macros, which expand into lvalues. + + @table @code ++@findex CROSSING_JUMP_P ++@cindex @code{jump_insn} and @samp{/j} ++@item CROSSING_JUMP_P (@var{x}) ++Nonzero in a @code{jump_insn} if it crosses between hot and cold sections, ++which could potentially be very far apart in the executable. The presence ++of this flag indicates to other optimizations that this branching instruction ++should not be ``collapsed'' into a simpler branching construct. It is used ++when the optimization to partition basic blocks into hot and cold sections ++is turned on. ++ + @findex CONSTANT_POOL_ADDRESS_P + @cindex @code{symbol_ref} and @samp{/u} + @cindex @code{unchanging}, in @code{symbol_ref} +@@ -577,37 +587,6 @@ In either case GCC assumes these addresses can be addressed directly, + perhaps with the help of base registers. + Stored in the @code{unchanging} field and printed as @samp{/u}. + +-@findex RTL_CONST_CALL_P +-@cindex @code{call_insn} and @samp{/u} +-@cindex @code{unchanging}, in @code{call_insn} +-@item RTL_CONST_CALL_P (@var{x}) +-In a @code{call_insn} indicates that the insn represents a call to a +-const function. Stored in the @code{unchanging} field and printed as +-@samp{/u}. +- +-@findex RTL_PURE_CALL_P +-@cindex @code{call_insn} and @samp{/i} +-@cindex @code{return_val}, in @code{call_insn} +-@item RTL_PURE_CALL_P (@var{x}) +-In a @code{call_insn} indicates that the insn represents a call to a +-pure function. Stored in the @code{return_val} field and printed as +-@samp{/i}. +- +-@findex RTL_CONST_OR_PURE_CALL_P +-@cindex @code{call_insn} and @samp{/u} or @samp{/i} +-@item RTL_CONST_OR_PURE_CALL_P (@var{x}) +-In a @code{call_insn}, true if @code{RTL_CONST_CALL_P} or +-@code{RTL_PURE_CALL_P} is true. +- +-@findex RTL_LOOPING_CONST_OR_PURE_CALL_P +-@cindex @code{call_insn} and @samp{/c} +-@cindex @code{call}, in @code{call_insn} +-@item RTL_LOOPING_CONST_OR_PURE_CALL_P (@var{x}) +-In a @code{call_insn} indicates that the insn represents a possibly +-infinite looping call to a const or pure function. Stored in the +-@code{call} field and printed as @samp{/c}. Only true if one of +-@code{RTL_CONST_CALL_P} or @code{RTL_PURE_CALL_P} is true. +- + @findex INSN_ANNULLED_BRANCH_P + @cindex @code{jump_insn} and @samp{/u} + @cindex @code{call_insn} and @samp{/u} +@@ -702,6 +681,29 @@ Stored in the @code{call} field and printed as @samp{/c}. + Nonzero in a @code{mem} if the memory reference holds a pointer. + Stored in the @code{frame_related} field and printed as @samp{/f}. + ++@findex MEM_READONLY_P ++@cindex @code{mem} and @samp{/u} ++@cindex @code{unchanging}, in @code{mem} ++@item MEM_READONLY_P (@var{x}) ++Nonzero in a @code{mem}, if the memory is statically allocated and read-only. ++ ++Read-only in this context means never modified during the lifetime of the ++program, not necessarily in ROM or in write-disabled pages. A common ++example of the later is a shared library's global offset table. This ++table is initialized by the runtime loader, so the memory is technically ++writable, but after control is transferred from the runtime loader to the ++application, this memory will never be subsequently modified. ++ ++Stored in the @code{unchanging} field and printed as @samp{/u}. ++ ++@findex PREFETCH_SCHEDULE_BARRIER_P ++@cindex @code{prefetch} and @samp{/v} ++@cindex @code{volatile}, in @code{prefetch} ++@item PREFETCH_SCHEDULE_BARRIER_P (@var{x}) ++In a @code{prefetch}, indicates that the prefetch is a scheduling barrier. ++No other INSNs will be moved over it. ++Stored in the @code{volatil} field and printed as @samp{/v}. ++ + @findex REG_FUNCTION_VALUE_P + @cindex @code{reg} and @samp{/i} + @cindex @code{return_val}, in @code{reg} +@@ -731,6 +733,37 @@ The same hard register may be used also for collecting the values of + functions called by this one, but @code{REG_FUNCTION_VALUE_P} is zero + in this kind of use. + ++@findex RTL_CONST_CALL_P ++@cindex @code{call_insn} and @samp{/u} ++@cindex @code{unchanging}, in @code{call_insn} ++@item RTL_CONST_CALL_P (@var{x}) ++In a @code{call_insn} indicates that the insn represents a call to a ++const function. Stored in the @code{unchanging} field and printed as ++@samp{/u}. ++ ++@findex RTL_PURE_CALL_P ++@cindex @code{call_insn} and @samp{/i} ++@cindex @code{return_val}, in @code{call_insn} ++@item RTL_PURE_CALL_P (@var{x}) ++In a @code{call_insn} indicates that the insn represents a call to a ++pure function. Stored in the @code{return_val} field and printed as ++@samp{/i}. ++ ++@findex RTL_CONST_OR_PURE_CALL_P ++@cindex @code{call_insn} and @samp{/u} or @samp{/i} ++@item RTL_CONST_OR_PURE_CALL_P (@var{x}) ++In a @code{call_insn}, true if @code{RTL_CONST_CALL_P} or ++@code{RTL_PURE_CALL_P} is true. ++ ++@findex RTL_LOOPING_CONST_OR_PURE_CALL_P ++@cindex @code{call_insn} and @samp{/c} ++@cindex @code{call}, in @code{call_insn} ++@item RTL_LOOPING_CONST_OR_PURE_CALL_P (@var{x}) ++In a @code{call_insn} indicates that the insn represents a possibly ++infinite looping call to a const or pure function. Stored in the ++@code{call} field and printed as @samp{/c}. Only true if one of ++@code{RTL_CONST_CALL_P} or @code{RTL_PURE_CALL_P} is true. ++ + @findex RTX_FRAME_RELATED_P + @cindex @code{insn} and @samp{/f} + @cindex @code{call_insn} and @samp{/f} +@@ -765,21 +798,6 @@ computation performed by this instruction, i.e., one that + This flag is required for exception handling support on targets with RTL + prologues. + +-@findex MEM_READONLY_P +-@cindex @code{mem} and @samp{/u} +-@cindex @code{unchanging}, in @code{mem} +-@item MEM_READONLY_P (@var{x}) +-Nonzero in a @code{mem}, if the memory is statically allocated and read-only. +- +-Read-only in this context means never modified during the lifetime of the +-program, not necessarily in ROM or in write-disabled pages. A common +-example of the later is a shared library's global offset table. This +-table is initialized by the runtime loader, so the memory is technically +-writable, but after control is transferred from the runtime loader to the +-application, this memory will never be subsequently modified. +- +-Stored in the @code{unchanging} field and printed as @samp{/u}. +- + @findex SCHED_GROUP_P + @cindex @code{insn} and @samp{/s} + @cindex @code{call_insn} and @samp{/s} +@@ -879,14 +897,6 @@ Stored in the @code{volatil} field and printed as @samp{/v}. + Most uses of @code{SYMBOL_REF_FLAG} are historic and may be subsumed + by @code{SYMBOL_REF_FLAGS}. Certainly use of @code{SYMBOL_REF_FLAGS} + is mandatory if the target requires more than one bit of storage. +- +-@findex PREFETCH_SCHEDULE_BARRIER_P +-@cindex @code{prefetch} and @samp{/v} +-@cindex @code{volatile}, in @code{prefetch} +-@item PREFETCH_SCHEDULE_BARRIER_P (@var{x}) +-In a @code{prefetch}, indicates that the prefetch is a scheduling barrier. +-No other INSNs will be moved over it. +-Stored in the @code{volatil} field and printed as @samp{/v}. + @end table + + These are the fields to which the above macros refer: +@@ -974,6 +985,8 @@ In a @code{set}, 1 means it is for a return. + + In a @code{call_insn}, 1 means it is a sibling call. + ++In a @code{jump_insn}, 1 means it is a crossing jump. ++ + In an RTL dump, this flag is represented as @samp{/j}. + + @findex unchanging +@@ -3887,16 +3900,6 @@ multiple targets; the last label in the insn (in the highest numbered + insn-field) goes into the @code{JUMP_LABEL} field and does not have a + @code{REG_LABEL_TARGET} note. @xref{Insns, JUMP_LABEL}. + +-@findex REG_CROSSING_JUMP +-@item REG_CROSSING_JUMP +-This insn is a branching instruction (either an unconditional jump or +-an indirect jump) which crosses between hot and cold sections, which +-could potentially be very far apart in the executable. The presence +-of this note indicates to other optimizations that this branching +-instruction should not be ``collapsed'' into a simpler branching +-construct. It is used when the optimization to partition basic blocks +-into hot and cold sections is turned on. +- + @findex REG_SETJMP + @item REG_SETJMP + Appears attached to each @code{CALL_INSN} to @code{setjmp} or a +diff --git a/gcc/reorg.c b/gcc/reorg.c +index 5914af6..77f3fe7 100644 +--- a/gcc/reorg.c ++++ b/gcc/reorg.c +@@ -3360,10 +3360,11 @@ relax_delay_slots (rtx_insn *first) + } + + /* See if we have a simple (conditional) jump that is useless. */ +- if (! INSN_ANNULLED_BRANCH_P (delay_jump_insn) +- && ! condjump_in_parallel_p (delay_jump_insn) ++ if (!CROSSING_JUMP_P (delay_jump_insn) ++ && !INSN_ANNULLED_BRANCH_P (delay_jump_insn) ++ && !condjump_in_parallel_p (delay_jump_insn) + && prev_active_insn (as_a<rtx_insn *> (target_label)) == insn +- && ! BARRIER_P (prev_nonnote_insn (as_a<rtx_insn *> (target_label))) ++ && !BARRIER_P (prev_nonnote_insn (as_a<rtx_insn *> (target_label))) + /* If the last insn in the delay slot sets CC0 for some insn, + various code assumes that it is in a delay slot. We could + put it back where it belonged and delete the register notes, +-- +1.8.5.6 + |