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| author | Jakub Jelinek <jakub@redhat.com> | 2010-02-11 10:17:54 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-02-11 10:17:54 +0100 |
| commit | 8f6aedbafe717b329098a6846167a1bee2821507 (patch) | |
| tree | e072b9fb483bdab98368db1fa8c73f104ce369a6 /gcc | |
| parent | d2d36740c2c8901e566dbbcc02ca5bbe51480fd7 (diff) | |
| download | gcc-8f6aedbafe717b329098a6846167a1bee2821507.zip gcc-8f6aedbafe717b329098a6846167a1bee2821507.tar.gz gcc-8f6aedbafe717b329098a6846167a1bee2821507.tar.bz2 | |
reload1.c (eliminate_regs_1): If insn is DEBUG_INSN, avoid any modifications outside of the DEBUG_INSN.
* reload1.c (eliminate_regs_1): If insn is DEBUG_INSN, avoid any
modifications outside of the DEBUG_INSN. Accept CLOBBERs inside
of DEBUG_INSNs.
(eliminate_regs_in_insn): Eliminate regs even in DEBUG_INSNs.
From-SVN: r156693
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/reload1.c | 16 |
2 files changed, 17 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e489d90..77b1337 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2010-02-11 Jakub Jelinek <jakub@redhat.com> + * reload1.c (eliminate_regs_1): If insn is DEBUG_INSN, avoid any + modifications outside of the DEBUG_INSN. Accept CLOBBERs inside + of DEBUG_INSNs. + (eliminate_regs_in_insn): Eliminate regs even in DEBUG_INSNs. + * dwarf2out.c (mem_loc_descriptor) <case MEM>: Use DW_OP_deref_size if MEM's mode size isn't DWARF2_ADDR_SIZE. (mem_loc_descriptor) <do_scompare>: Allow also VOIDmode arguments. diff --git a/gcc/reload1.c b/gcc/reload1.c index 2555dc8..ee90f35 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -1,6 +1,6 @@ /* Reload pseudo regs into hard regs for insns that require hard regs. Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 + 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GCC. @@ -2570,7 +2570,7 @@ eliminate_regs_1 (rtx x, enum machine_mode mem_mode, rtx insn, else if (reg_renumber && reg_renumber[regno] < 0 && reg_equiv_invariant && reg_equiv_invariant[regno]) { - if (may_use_invariant) + if (may_use_invariant || (insn && DEBUG_INSN_P (insn))) return eliminate_regs_1 (copy_rtx (reg_equiv_invariant[regno]), mem_mode, insn, true); /* There exists at least one use of REGNO that cannot be @@ -2685,9 +2685,11 @@ eliminate_regs_1 (rtx x, enum machine_mode mem_mode, rtx insn, if (ep->from_rtx == XEXP (x, 0) && ep->can_eliminate) { if (! mem_mode - /* Refs inside notes don't count for this purpose. */ + /* Refs inside notes or in DEBUG_INSNs don't count for + this purpose. */ && ! (insn != 0 && (GET_CODE (insn) == EXPR_LIST - || GET_CODE (insn) == INSN_LIST))) + || GET_CODE (insn) == INSN_LIST + || DEBUG_INSN_P (insn)))) ep->ref_outside_mem = 1; return @@ -2863,6 +2865,9 @@ eliminate_regs_1 (rtx x, enum machine_mode mem_mode, rtx insn, return x; case CLOBBER: + gcc_assert (insn && DEBUG_INSN_P (insn)); + break; + case ASM_OPERANDS: case SET: gcc_unreachable (); @@ -3199,6 +3204,9 @@ eliminate_regs_in_insn (rtx insn, int replace) || GET_CODE (PATTERN (insn)) == ADDR_DIFF_VEC || GET_CODE (PATTERN (insn)) == ASM_INPUT || DEBUG_INSN_P (insn)); + if (DEBUG_INSN_P (insn)) + INSN_VAR_LOCATION_LOC (insn) + = eliminate_regs (INSN_VAR_LOCATION_LOC (insn), VOIDmode, insn); return 0; } |