156 lines
5.2 KiB
Diff
156 lines
5.2 KiB
Diff
--- gcc/cfglayout.c.jj 2008-10-07 21:35:33.000000000 +0200
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+++ gcc/cfglayout.c 2008-10-09 11:18:51.000000000 +0200
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@@ -448,13 +448,12 @@ change_scope (rtx orig_insn, tree s1, tr
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}
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}
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-/* Return lexical scope block insn belong to. */
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+/* Return lexical scope block locator belongs to. */
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static tree
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-insn_scope (const_rtx insn)
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+locator_scope (int loc)
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{
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int max = VEC_length (int, block_locators_locs);
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int min = 0;
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- int loc = INSN_LOCATOR (insn);
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/* When block_locators_locs was initialized, the pro- and epilogue
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insns didn't exist yet and can therefore not be found this way.
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@@ -488,6 +487,13 @@ insn_scope (const_rtx insn)
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return VEC_index (tree, block_locators_blocks, min);
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}
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+/* Return lexical scope block insn belongs to. */
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+static tree
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+insn_scope (const_rtx insn)
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+{
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+ return locator_scope (INSN_LOCATOR (insn));
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+}
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+
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/* Return line number of the statement specified by the locator. */
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static location_t
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locator_location (int loc)
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@@ -551,6 +557,17 @@ insn_file (const_rtx insn)
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return locator_file (INSN_LOCATOR (insn));
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}
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+/* Return true if LOC1 and LOC2 locators have the same location and scope. */
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+bool
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+locator_eq (int loc1, int loc2)
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+{
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+ if (loc1 == loc2)
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+ return true;
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+ if (locator_location (loc1) != locator_location (loc2))
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+ return false;
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+ return locator_scope (loc1) == locator_scope (loc2);
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+}
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+
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/* Rebuild all the NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes based
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on the scope tree and the newly reordered instructions. */
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@@ -901,24 +918,30 @@ fixup_reorder_chain (void)
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if (e->goto_locus && !(e->flags & EDGE_ABNORMAL))
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{
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basic_block nb;
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+ rtx end;
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- if (simplejump_p (BB_END (e->src)))
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+ insn = BB_END (e->src);
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+ end = PREV_INSN (BB_HEAD (e->src));
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+ while (insn != end
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+ && (!INSN_P (insn) || INSN_LOCATOR (insn) == 0))
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+ insn = PREV_INSN (insn);
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+ if (insn != end
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+ && locator_eq (INSN_LOCATOR (insn), (int) e->goto_locus))
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+ continue;
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+ if (simplejump_p (BB_END (e->src))
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+ && INSN_LOCATOR (BB_END (e->src)) == 0)
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{
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- if (INSN_LOCATOR (BB_END (e->src)) == (int) e->goto_locus)
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- continue;
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- if (INSN_LOCATOR (BB_END (e->src)) == 0)
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- {
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- INSN_LOCATOR (BB_END (e->src)) = e->goto_locus;
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- continue;
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- }
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+ INSN_LOCATOR (BB_END (e->src)) = e->goto_locus;
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+ continue;
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}
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if (e->dest != EXIT_BLOCK_PTR)
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{
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insn = BB_HEAD (e->dest);
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- if (!INSN_P (insn))
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- insn = next_insn (insn);
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- if (insn && INSN_P (insn)
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- && INSN_LOCATOR (insn) == (int) e->goto_locus)
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+ end = NEXT_INSN (BB_END (e->dest));
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+ while (insn != end && !INSN_P (insn))
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+ insn = NEXT_INSN (insn);
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+ if (insn != end && INSN_LOCATOR (insn)
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+ && locator_eq (INSN_LOCATOR (insn), (int) e->goto_locus))
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continue;
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}
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nb = split_edge (e);
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--- gcc/rtl.h.jj 2008-10-07 21:25:44.000000000 +0200
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+++ gcc/rtl.h 2008-10-09 11:15:57.000000000 +0200
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@@ -1622,6 +1622,7 @@ extern int insn_line (const_rtx);
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extern const char * insn_file (const_rtx);
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extern int locator_line (int);
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extern const char * locator_file (int);
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+extern bool locator_eq (int, int);
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extern int prologue_locator, epilogue_locator;
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/* In jump.c */
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--- gcc/cfgrtl.c.jj 2008-10-07 21:35:33.000000000 +0200
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+++ gcc/cfgrtl.c 2008-10-09 10:37:03.000000000 +0200
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@@ -2623,19 +2623,21 @@ cfg_layout_merge_blocks (basic_block a,
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some unique locus, emit a nop with that locus in between. */
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if (!optimize && EDGE_SUCC (a, 0)->goto_locus)
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{
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- rtx insn = BB_END (a);
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+ rtx insn = BB_END (a), end = PREV_INSN (BB_HEAD (a));
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int goto_locus = EDGE_SUCC (a, 0)->goto_locus;
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- if (NOTE_P (insn))
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- insn = prev_nonnote_insn (insn);
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- if (insn && INSN_P (insn) && INSN_LOCATOR (insn) == goto_locus)
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+ while (insn != end && (!INSN_P (insn) || INSN_LOCATOR (insn) == 0))
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+ insn = PREV_INSN (insn);
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+ if (insn != end && locator_eq (INSN_LOCATOR (insn), goto_locus))
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goto_locus = 0;
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else
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{
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insn = BB_HEAD (b);
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- if (!INSN_P (insn))
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- insn = next_insn (insn);
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- if (insn && INSN_P (insn) && INSN_LOCATOR (insn) == goto_locus)
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+ end = NEXT_INSN (BB_END (b));
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+ while (insn != end && !INSN_P (insn))
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+ insn = NEXT_INSN (insn);
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+ if (insn != end && INSN_LOCATOR (insn) != 0
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+ && locator_eq (INSN_LOCATOR (insn), goto_locus))
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goto_locus = 0;
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}
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if (goto_locus)
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--- gcc/cfgcleanup.c.jj 2008-10-07 21:35:33.000000000 +0200
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+++ gcc/cfgcleanup.c 2008-10-09 11:07:40.000000000 +0200
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@@ -482,7 +482,7 @@ try_forward_edges (int mode, basic_block
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blocks with different locus are not optimized out. */
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int locus = single_succ_edge (target)->goto_locus;
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- if (locus && goto_locus && locus != goto_locus)
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+ if (locus && goto_locus && !locator_eq (locus, goto_locus))
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counter = n_basic_blocks;
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else if (locus)
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goto_locus = locus;
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@@ -491,7 +491,8 @@ try_forward_edges (int mode, basic_block
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{
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locus = INSN_LOCATOR (BB_END (target));
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- if (locus && goto_locus && locus != goto_locus)
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+ if (locus && goto_locus
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+ && !locator_eq (locus, goto_locus))
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counter = n_basic_blocks;
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else if (locus)
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goto_locus = locus;
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