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

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* 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.

From-SVN: r162910
This commit is contained in:
Uros Bizjak 2010-08-05 14:03:36 +02:00 committed by Uros Bizjak
parent e2534738ee
commit 4caa21a13b
2 changed files with 11 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-08-05 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.
2010-08-05 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.c (ix86_decompose_address): Check for SI_REG

8
gcc/expmed.c
View File

@ -2904,9 +2904,11 @@ 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;