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expmed.c (expand_mult_const): Expand shift into temporary. 

2010-08-06  Uros Bizjak  <ubizjak@gmail.com>

	* expmed.c (expand_mult_const) <case alg_shift>: Expand shift into
	temporary. Emit move from temporary to accum, so REG_EQUAL note will
	be attached to this insn in correct mode.

2010-08-06  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386.c (ix86_decompose_address): Check for SI_REG
	using REGNO of base_reg directly.

From-SVN: r162940
This commit is contained in:
Uros Bizjak 2010-08-06 09:52:04 +02:00
parent 4030ae76ca
commit 2b350c1006
4 changed files with 18 additions and 6 deletions
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11
gcc/ChangeLog
View File

@ -1,3 +1,14 @@
2010-08-06 Uros Bizjak <ubizjak@gmail.com>
* expmed.c (expand_mult_const) <case alg_shift>: Expand shift into
temporary. Emit move from temporary to accum, so REG_EQUAL note will
be attached to this insn in correct mode.
2010-08-06 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_decompose_address): Check for SI_REG
using REGNO of base_reg directly.
2010-08-04 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/spu.c (spu_emit_branch_hint): Do not access NOTE_KIND of

3
gcc/config/i386/i386.c
View File

@ -8884,8 +8884,7 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
to test cfun for being non-NULL. */
if (TARGET_K6 && cfun && optimize_function_for_speed_p (cfun)
&& base_reg && !index_reg && !disp
&& REG_P (base_reg)
&& REGNO_REG_CLASS (REGNO (base_reg)) == SIREG)
&& REG_P (base_reg) && REGNO (base_reg) == SI_REG)
disp = const0_rtx;
/* Special case: encode reg+reg instead of reg*2. */

8
gcc/expmed.c
View File

@ -2931,9 +2931,11 @@ expand_mult_const (enum machine_mode mode, rtx op0, HOST_WIDE_INT val,
switch (alg->op[opno])
{
case alg_shift:
accum = expand_shift (LSHIFT_EXPR, mode, accum,
build_int_cst (NULL_TREE, log),
NULL_RTX, 0);
tem = expand_shift (LSHIFT_EXPR, mode, accum,
build_int_cst (NULL_TREE, log),
NULL_RTX, 0);
/* REG_EQUAL note will be attached to the following insn. */
emit_move_insn (accum, tem);
val_so_far <<= log;
break;

2
gcc/testsuite/ChangeLog
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@ -320,7 +320,7 @@
2009-10-03 Ben Elliston <bje@au.ibm.com>
Janis Johnson <janis187@us.ibm.com>
Diego Novillo <dnovillo@google.com>
Diego Novillo <dnovillo@google.com>
* lib/c-torture.exp: Load target-supports.exp.