From e59d83aa39bdf6bc545649db1737cbe3cc62a136 Mon Sep 17 00:00:00 2001
From: Roman Zippel <zippel@linux-m68k.org>
Date: Wed, 19 Sep 2007 15:20:59 +0000
Subject: [PATCH] m68k.c (output_move_himode): Remove jump table recognition.
* config/m68k/m68k.c (output_move_himode): Remove jump table
recognition.
config/m68k/m68k.md (lea): Likewise.
* config/m68k/m68k.c (print_operand_address): Use simple pc
relative addressing.
From-SVN: r128601
---
gcc/ChangeLog | 8 ++++++++
gcc/config/m68k/m68k.c | 36 ++----------------------------------
gcc/config/m68k/m68k.md | 23 ++---------------------
3 files changed, 12 insertions(+), 55 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 27a187336438..2e4a1907503a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2007-09-19 Roman Zippel <zippel@linux-m68k.org>
+
+ * config/m68k/m68k.c (output_move_himode): Remove jump table
+ recognition.
+ config/m68k/m68k.md (lea): Likewise.
+ * config/m68k/m68k.c (print_operand_address): Use simple pc
+ relative addressing.
+
2007-09-19 Bernd Schmidt <bernd.schmidt@analog.com>
* doc/tm.texi (IS_ASM_LOGICAL_LINE_SEPARATOR): Document new argument.
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index 8248e7180ac2..c8e5a6f4a058 100644
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -2359,25 +2359,6 @@ output_move_himode (rtx *operands)
}
else if (CONSTANT_P (operands[1]))
return "move%.l %1,%0";
- /* Recognize the insn before a tablejump, one that refers
- to a table of offsets. Such an insn will need to refer
- to a label on the insn. So output one. Use the label-number
- of the table of offsets to generate this label. This code,
- and similar code below, assumes that there will be at most one
- reference to each table. */
- if (GET_CODE (operands[1]) == MEM
- && GET_CODE (XEXP (operands[1], 0)) == PLUS
- && GET_CODE (XEXP (XEXP (operands[1], 0), 1)) == LABEL_REF
- && GET_CODE (XEXP (XEXP (operands[1], 0), 0)) != PLUS)
- {
- rtx labelref = XEXP (XEXP (operands[1], 0), 1);
- if (MOTOROLA)
- asm_fprintf (asm_out_file, "\t.set %LLI%d,.+2\n",
- CODE_LABEL_NUMBER (XEXP (labelref, 0)));
- else
- (*targetm.asm_out.internal_label) (asm_out_file, "LI",
- CODE_LABEL_NUMBER (XEXP (labelref, 0)));
- }
return "move%.w %1,%0";
}
@@ -3819,19 +3800,6 @@ print_operand (FILE *file, rtx op, int letter)
It is possible for PIC to generate a (plus (label_ref...) (reg...))
and we handle that just like we would a (plus (symbol_ref...) (reg...)).
- Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
- fails to assemble. Luckily "Lnnn(pc,d0.l*2)" produces the results
- we want. This difference can be accommodated by using an assembler
- define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
- string, as necessary. This is accomplished via the ASM_OUTPUT_CASE_END
- macro. See m68k/sgs.h for an example; for versions without the bug.
- Some assemblers refuse all the above solutions. The workaround is to
- emit "K(pc,d0.l*2)" with K being a small constant known to give the
- right behavior.
-
- They also do not like things like "pea 1.w", so we simple leave off
- the .w on small constants.
-
This routine is responsible for distinguishing between -fpic and -fPIC
style relocations in an address. When generating -fpic code the
offset is output in word mode (e.g. movel a5@(_foo:w), a0). When generating
@@ -3902,7 +3870,7 @@ print_operand_address (FILE *file, rtx addr)
{
/* Print the "offset(base" component. */
if (labelno >= 0)
- asm_fprintf (file, "%LL%d-%LLI%d.b(%Rpc,", labelno, labelno);
+ asm_fprintf (file, "%LL%d(%Rpc,", labelno);
else
{
if (address.offset)
@@ -3940,7 +3908,7 @@ print_operand_address (FILE *file, rtx addr)
{
/* Print the "base@(offset" component. */
if (labelno >= 0)
- asm_fprintf (file, "%Rpc@(%LL%d-%LLI%d-2:b", labelno, labelno);
+ asm_fprintf (file, "%Rpc@(%LL%d", labelno);
else
{
if (address.base)
diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md
index 07d40de4f7e3..b3f12d8b6162 100644
--- a/gcc/config/m68k/m68k.md
+++ b/gcc/config/m68k/m68k.md
@@ -7297,30 +7297,11 @@
;; This should not be used unless the add/sub insns can't be.
-(define_insn ""
+(define_insn "*lea"
[(set (match_operand:SI 0 "nonimmediate_operand" "=a")
(match_operand:QI 1 "address_operand" "p"))]
""
-{
- /* Recognize an insn that refers to a table of offsets. Such an insn will
- need to refer to a label on the insn. So output one. Use the
- label-number of the table of offsets to generate this label. This code,
- and similar code above, assumes that there will be at most one reference
- to each table. */
- if (GET_CODE (operands[1]) == PLUS
- && GET_CODE (XEXP (operands[1], 1)) == LABEL_REF
- && GET_CODE (XEXP (operands[1], 0)) != PLUS)
- {
- rtx labelref = XEXP (operands[1], 1);
- if (MOTOROLA)
- asm_fprintf (asm_out_file, "\\t.set %LLI%d,.+2\\n",
- CODE_LABEL_NUMBER (XEXP (labelref, 0)));
- else
- (*targetm.asm_out.internal_label) (asm_out_file, "LI",
- CODE_LABEL_NUMBER (XEXP (labelref, 0)));
- }
- return "lea %a1,%0";
-})
+ "lea %a1,%0")
;; This is the first machine-dependent peephole optimization.
;; It is useful when a floating value is returned from a function call
--
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