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riscv-gcc-1
Commit 7da7269a by Jakub Jelinek Committed by Jakub Jelinek
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re PR target/70321 (STV generates less optimized code) 

	PR target/70321
	* config/i386/i386.md (*anddi3_doubleword, *<code>di3_doubleword):
	Optimize TARGET_STV splitters, if high or low word of last argument
	is 0 or -1.

From-SVN: r234416
parent bfd84e6b
Showing with 63 additions and 16 deletions
gcc/ChangeLog
2016-03-23 Jakub Jelinek <jakub@redhat.com>
PR target/70321
* config/i386/i386.md (*anddi3_doubleword, *<code>di3_doubleword):
Optimize TARGET_STV splitters, if high or low word of last argument
is 0 or -1.
2016-03-22 Jeff Law <law@redhat.com>
PR target/70232
......
gcc/config/i386/i386.md
......@@ -8141,16 +8141,31 @@
(match_operand:DI 1 "nonimmediate_operand" "%0,0,0")
(match_operand:DI 2 "x86_64_szext_general_operand" "Z,re,rm")))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_64BIT && TARGET_STV && TARGET_SSE2 && ix86_binary_operator_ok (AND, DImode, operands)"
"!TARGET_64BIT && TARGET_STV && TARGET_SSE2
&& ix86_binary_operator_ok (AND, DImode, operands)"
"#"
"&& reload_completed"
[(parallel [(set (match_dup 0)
(and:SI (match_dup 1) (match_dup 2)))
(clobber (reg:CC FLAGS_REG))])
(parallel [(set (match_dup 3)
(and:SI (match_dup 4) (match_dup 5)))
(clobber (reg:CC FLAGS_REG))])]
"split_double_mode (DImode, &operands[0], 3, &operands[0], &operands[3]);")
[(const_int 0)]
{
split_double_mode (DImode, &operands[0], 3, &operands[0], &operands[3]);
if (operands[2] == const0_rtx)
{
operands[1] = const0_rtx;
ix86_expand_move (SImode, &operands[0]);
}
else if (operands[2] != constm1_rtx)
emit_insn (gen_andsi3 (operands[0], operands[1], operands[2]));
else if (operands[5] == constm1_rtx)
emit_note (NOTE_INSN_DELETED);
if (operands[5] == const0_rtx)
{
operands[4] = const0_rtx;
ix86_expand_move (SImode, &operands[3]);
}
else if (operands[5] != constm1_rtx)
emit_insn (gen_andsi3 (operands[3], operands[4], operands[5]));
DONE;
})
(define_insn "*andsi_1"
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm,r,Ya,!k")
......@@ -8665,16 +8680,41 @@
(match_operand:DI 1 "nonimmediate_operand" "%0,0,0")
(match_operand:DI 2 "x86_64_szext_general_operand" "Z,re,rm")))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_64BIT && TARGET_STV && TARGET_SSE2 && ix86_binary_operator_ok (<CODE>, DImode, operands)"
"!TARGET_64BIT && TARGET_STV && TARGET_SSE2
&& ix86_binary_operator_ok (<CODE>, DImode, operands)"
"#"
"&& reload_completed"
[(parallel [(set (match_dup 0)
(any_or:SI (match_dup 1) (match_dup 2)))
(clobber (reg:CC FLAGS_REG))])
(parallel [(set (match_dup 3)
(any_or:SI (match_dup 4) (match_dup 5)))
(clobber (reg:CC FLAGS_REG))])]
"split_double_mode (DImode, &operands[0], 3, &operands[0], &operands[3]);")
[(const_int 0)]
{
split_double_mode (DImode, &operands[0], 3, &operands[0], &operands[3]);
if (operands[2] == constm1_rtx)
{
if (<CODE> == IOR)
{
operands[1] = constm1_rtx;
ix86_expand_move (SImode, &operands[0]);
}
else
ix86_expand_unary_operator (NOT, SImode, &operands[0]);
}
else if (operands[2] != const0_rtx)
ix86_expand_binary_operator (<CODE>, SImode, &operands[0]);
else if (operands[5] == const0_rtx)
emit_note (NOTE_INSN_DELETED);
if (operands[5] == constm1_rtx)
{
if (<CODE> == IOR)
{
operands[4] = constm1_rtx;
ix86_expand_move (SImode, &operands[3]);
}
else
ix86_expand_unary_operator (NOT, SImode, &operands[3]);
}
else if (operands[5] != const0_rtx)
ix86_expand_binary_operator (<CODE>, SImode, &operands[3]);
DONE;
})
(define_insn_and_split "*andndi3_doubleword"
[(set (match_operand:DI 0 "register_operand" "=r,r")
......
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