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re PR rtl-optimization/16408 (internal compiler error: in delete_insn, at cfgrtl.c:146)

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PR rtl-optimization/16408
	* gcse.c (replace_store_insn): Fix LIBCALL/RETVAL notes.

From-SVN: r86928
This commit is contained in:
Zdenek Dvorak 2004-09-01 22:28:39 +02:00 committed by Zdenek Dvorak
parent 57b38f517c
commit d7fe118321
2 changed files with 26 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-09-01 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
PR rtl-optimization/16408
* gcse.c (replace_store_insn): Fix LIBCALL/RETVAL notes.
2004-09-01 Richard Henderson <rth@redhat.com>
* config/ns32k/ns32k.h (TRANSFER_FROM_TRAMPOLINE): Remove.

22
gcc/gcse.c
View File

@ -6321,7 +6321,7 @@ remove_reachable_equiv_notes (basic_block bb, struct ls_expr *smexpr)
static void
replace_store_insn (rtx reg, rtx del, basic_block bb, struct ls_expr *smexpr)
{
rtx insn, mem, note, set, ptr;
rtx insn, mem, note, set, ptr, pair;
mem = smexpr->pattern;
insn = gen_move_insn (reg, SET_SRC (single_set (del)));
@ -6343,6 +6343,26 @@ replace_store_insn (rtx reg, rtx del, basic_block bb, struct ls_expr *smexpr)
XEXP (ptr, 0) = insn;
break;
}
/* Move the notes from the deleted insn to its replacement, and patch
up the LIBCALL notes. */
REG_NOTES (insn) = REG_NOTES (del);
note = find_reg_note (insn, REG_RETVAL, NULL_RTX);
if (note)
{
pair = XEXP (note, 0);
note = find_reg_note (pair, REG_LIBCALL, NULL_RTX);
XEXP (note, 0) = insn;
}
note = find_reg_note (insn, REG_LIBCALL, NULL_RTX);
if (note)
{
pair = XEXP (note, 0);
note = find_reg_note (pair, REG_RETVAL, NULL_RTX);
XEXP (note, 0) = insn;
}
delete_insn (del);
/* Now we must handle REG_EQUAL notes whose contents is equal to the mem;