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optabs.c (can_compare_p): Test the predicate of a cbranch and cstore pattern.

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2009-04-07  Paolo Bonzini  <bonzini@gnu.org>

        * optabs.c (can_compare_p): Test the predicate of a
        cbranch and cstore pattern.

From-SVN: r145667
This commit is contained in:
Paolo Bonzini 2009-04-07 12:39:37 +00:00 committed by Paolo Bonzini
parent 9a53bc17c4
commit c3c64f5002
2 changed files with 18 additions and 5 deletions

5
gcc/ChangeLog

@ -1,3 +1,8 @@
2009-04-07 Paolo Bonzini <bonzini@gnu.org>
* optabs.c (can_compare_p): Test the predicate of a
cbranch and cstore pattern.
2009-04-07 Paolo Bonzini <bonzini@gnu.org>
* expr.c (convert_move): Use emit_store_flag instead of

18
gcc/optabs.c

@ -3980,8 +3980,12 @@ int
can_compare_p (enum rtx_code code, enum machine_mode mode,
enum can_compare_purpose purpose)
{
rtx test;
test = gen_rtx_fmt_ee (code, mode, const0_rtx, const0_rtx);
do
{
int icode;
if (optab_handler (cmp_optab, mode)->insn_code != CODE_FOR_nothing)
{
if (purpose == ccp_jump)
@ -3993,15 +3997,19 @@ can_compare_p (enum rtx_code code, enum machine_mode mode,
return 1;
}
if (purpose == ccp_jump
&& optab_handler (cbranch_optab, mode)->insn_code != CODE_FOR_nothing)
return 1;
&& (icode = optab_handler (cbranch_optab, mode)->insn_code) != CODE_FOR_nothing
&& insn_data[icode].operand[0].predicate (test, mode))
return 1;
if (purpose == ccp_store_flag
&& (icode = optab_handler (cstore_optab, mode)->insn_code) != CODE_FOR_nothing
&& insn_data[icode].operand[1].predicate (test, mode))
return 1;
if (purpose == ccp_cmov
&& optab_handler (cmov_optab, mode)->insn_code != CODE_FOR_nothing)
return 1;
if (purpose == ccp_store_flag
&& optab_handler (cstore_optab, mode)->insn_code != CODE_FOR_nothing)
return 1;
mode = GET_MODE_WIDER_MODE (mode);
PUT_MODE (test, mode);
}
while (mode != VOIDmode);