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-rw-r--r--toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99486.patch230
1 files changed, 0 insertions, 230 deletions
diff --git a/toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99486.patch b/toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99486.patch
deleted file mode 100644
index e6b58ac872..0000000000
--- a/toolchain-layer/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99486.patch
+++ /dev/null
@@ -1,230 +0,0 @@
-2011-03-09 Bernd Schmidt <bernds@codesourcery.com>
-
- Issue #10649
- gcc/
- * dwarf2out.c (dwarf2out_begin_epilogue): Accept simplejumps
- as well as returnjumps.
- * cfganal.c (set_edge_can_fallthru_flag): Revert previous change
- that tried to keep epilogue blocks adjacent.
-
-2011-02-03 Bernd Schmidt <bernds@codesourcery.com>
-
- gcc/
- * function.c (prepare_shrink_wrap): New function.
- (thread_prologue_and_epilogue_insns): Call it.
-
-=== modified file 'gcc/cfganal.c'
---- old/gcc/cfganal.c 2011-02-08 10:51:58 +0000
-+++ new/gcc/cfganal.c 2011-03-10 14:55:10 +0000
-@@ -271,37 +271,6 @@
- EDGE_SUCC (bb, 0)->flags |= EDGE_CAN_FALLTHRU;
- EDGE_SUCC (bb, 1)->flags |= EDGE_CAN_FALLTHRU;
- }
-- /* dwarf2out expects that a NOTE_INSN_EPILOGUE_BEGIN is always paired
-- with a return or a sibcall. Ensure that this remains the case if
-- they are in different basic blocks. */
-- FOR_EACH_BB (bb)
-- {
-- edge e;
-- edge_iterator ei;
-- rtx insn, end;
--
-- end = BB_END (bb);
-- FOR_BB_INSNS (bb, insn)
-- if (GET_CODE (insn) == NOTE
-- && NOTE_KIND (insn) == NOTE_INSN_EPILOGUE_BEG
-- && !(CALL_P (end) && SIBLING_CALL_P (end))
-- && !returnjump_p (end))
-- {
-- basic_block other_bb = NULL;
-- FOR_EACH_EDGE (e, ei, bb->succs)
-- {
-- if (e->flags & EDGE_FALLTHRU)
-- other_bb = e->dest;
-- else
-- e->flags &= ~EDGE_CAN_FALLTHRU;
-- }
-- FOR_EACH_EDGE (e, ei, other_bb->preds)
-- {
-- if (!(e->flags & EDGE_FALLTHRU))
-- e->flags &= ~EDGE_CAN_FALLTHRU;
-- }
-- }
-- }
- }
-
- /* Find unreachable blocks. An unreachable block will have 0 in
-
-=== modified file 'gcc/dwarf2out.c'
---- old/gcc/dwarf2out.c 2011-02-08 10:51:58 +0000
-+++ new/gcc/dwarf2out.c 2011-03-10 14:55:10 +0000
-@@ -2782,10 +2782,10 @@
- dwarf2out_frame_debug_expr (insn, label);
- }
-
--/* Determine if we need to save and restore CFI information around this
-- epilogue. If SIBCALL is true, then this is a sibcall epilogue. If
-- we do need to save/restore, then emit the save now, and insert a
-- NOTE_INSN_CFA_RESTORE_STATE at the appropriate place in the stream. */
-+/* Determine if we need to save and restore CFI information around
-+ this epilogue. If we do need to save/restore, then emit the save
-+ now, and insert a NOTE_INSN_CFA_RESTORE_STATE at the appropriate
-+ place in the stream. */
-
- void
- dwarf2out_begin_epilogue (rtx insn)
-@@ -2800,8 +2800,10 @@
- if (!INSN_P (i))
- continue;
-
-- /* Look for both regular and sibcalls to end the block. */
-- if (returnjump_p (i))
-+ /* Look for both regular and sibcalls to end the block. Various
-+ optimization passes may cause us to jump to a common epilogue
-+ tail, so we also accept simplejumps. */
-+ if (returnjump_p (i) || simplejump_p (i))
- break;
- if (CALL_P (i) && SIBLING_CALL_P (i))
- break;
-
-=== modified file 'gcc/function.c'
---- old/gcc/function.c 2011-02-08 10:51:58 +0000
-+++ new/gcc/function.c 2011-03-10 14:55:10 +0000
-@@ -5038,6 +5038,127 @@
- return true;
- return false;
- }
-+
-+/* Look for sets of call-saved registers in the first block of the
-+ function, and move them down into successor blocks if the register
-+ is used only on one path. This exposes more opportunities for
-+ shrink-wrapping.
-+ These kinds of sets often occur when incoming argument registers are
-+ moved to call-saved registers because their values are live across
-+ one or more calls during the function. */
-+
-+static void
-+prepare_shrink_wrap (basic_block entry_block)
-+{
-+ rtx insn, curr;
-+ FOR_BB_INSNS_SAFE (entry_block, insn, curr)
-+ {
-+ basic_block next_bb;
-+ edge e, live_edge;
-+ edge_iterator ei;
-+ rtx set, scan;
-+ unsigned destreg, srcreg;
-+
-+ if (!NONDEBUG_INSN_P (insn))
-+ continue;
-+ set = single_set (insn);
-+ if (!set)
-+ continue;
-+
-+ if (!REG_P (SET_SRC (set)) || !REG_P (SET_DEST (set)))
-+ continue;
-+ srcreg = REGNO (SET_SRC (set));
-+ destreg = REGNO (SET_DEST (set));
-+ if (hard_regno_nregs[srcreg][GET_MODE (SET_SRC (set))] > 1
-+ || hard_regno_nregs[destreg][GET_MODE (SET_DEST (set))] > 1)
-+ continue;
-+
-+ next_bb = entry_block;
-+ scan = insn;
-+
-+ for (;;)
-+ {
-+ live_edge = NULL;
-+ FOR_EACH_EDGE (e, ei, next_bb->succs)
-+ {
-+ if (REGNO_REG_SET_P (df_get_live_in (e->dest), destreg))
-+ {
-+ if (live_edge)
-+ {
-+ live_edge = NULL;
-+ break;
-+ }
-+ live_edge = e;
-+ }
-+ }
-+ if (!live_edge)
-+ break;
-+ /* We can sometimes encounter dead code. Don't try to move it
-+ into the exit block. */
-+ if (live_edge->dest == EXIT_BLOCK_PTR)
-+ break;
-+ if (EDGE_COUNT (live_edge->dest->preds) > 1)
-+ break;
-+ while (scan != BB_END (next_bb))
-+ {
-+ scan = NEXT_INSN (scan);
-+ if (NONDEBUG_INSN_P (scan))
-+ {
-+ rtx link;
-+ HARD_REG_SET set_regs;
-+
-+ CLEAR_HARD_REG_SET (set_regs);
-+ note_stores (PATTERN (scan), record_hard_reg_sets,
-+ &set_regs);
-+ if (CALL_P (scan))
-+ IOR_HARD_REG_SET (set_regs, call_used_reg_set);
-+ for (link = REG_NOTES (scan); link; link = XEXP (link, 1))
-+ if (REG_NOTE_KIND (link) == REG_INC)
-+ record_hard_reg_sets (XEXP (link, 0), NULL, &set_regs);
-+
-+ if (TEST_HARD_REG_BIT (set_regs, srcreg)
-+ || reg_referenced_p (SET_DEST (set),
-+ PATTERN (scan)))
-+ {
-+ scan = NULL_RTX;
-+ break;
-+ }
-+ if (CALL_P (scan))
-+ {
-+ rtx link = CALL_INSN_FUNCTION_USAGE (scan);
-+ while (link)
-+ {
-+ rtx tmp = XEXP (link, 0);
-+ if (GET_CODE (tmp) == USE
-+ && reg_referenced_p (SET_DEST (set), tmp))
-+ break;
-+ link = XEXP (link, 1);
-+ }
-+ if (link)
-+ {
-+ scan = NULL_RTX;
-+ break;
-+ }
-+ }
-+ }
-+ }
-+ if (!scan)
-+ break;
-+ next_bb = live_edge->dest;
-+ }
-+
-+ if (next_bb != entry_block)
-+ {
-+ rtx after = BB_HEAD (next_bb);
-+ while (!NOTE_P (after)
-+ || NOTE_KIND (after) != NOTE_INSN_BASIC_BLOCK)
-+ after = NEXT_INSN (after);
-+ emit_insn_after (PATTERN (insn), after);
-+ delete_insn (insn);
-+ }
-+ }
-+}
-+
- #endif
-
- #ifdef HAVE_return
-@@ -5215,6 +5336,8 @@
- bitmap_head bb_antic_flags;
- bitmap_head bb_on_list;
-
-+ prepare_shrink_wrap (entry_edge->dest);
-+
- bitmap_initialize (&bb_antic_flags, &bitmap_default_obstack);
- bitmap_initialize (&bb_on_list, &bitmap_default_obstack);
-
-
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