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lvzhengyang
riscv-gcc-1
Commits
7a907dee
Commit
7a907dee
authored
Jun 19, 2019
by
Uros Bizjak
Committed by
Uros Bizjak
Jun 19, 2019
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i386.md (cmpstrnsi): Remove dead code.
* config/i386/i386.md (cmpstrnsi): Remove dead code. From-SVN: r272474
parent
25403c41
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gcc/ChangeLog
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gcc/config/i386/i386.md
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gcc/ChangeLog
View file @
7a907dee
2019-06-19 Uroš Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (cmpstrnsi): Remove dead code.
2019-06-19 Wilco Dijkstra <wdijkstr@arm.com>
PR middle-end/84521
...
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gcc/config/i386/i386.md
View file @
7a907dee
...
...
@@ -17004,7 +17004,7 @@
(use (match_operand 4 "immediate_operand"))]
""
{
rtx addr1, addr2,
out, outlow, count, countreg, align
;
rtx addr1, addr2,
countreg, align, out
;
if (optimize_insn_for_size_p () && !TARGET_INLINE_ALL_STRINGOPS)
FAIL;
...
...
@@ -17028,10 +17028,6 @@
&& TREE_CODE (TREE_OPERAND (TREE_OPERAND (t2, 0), 0)) == STRING_CST)))
FAIL;
out = operands[0];
if (!REG_P (out))
out = gen_reg_rtx (SImode);
addr1 = copy_addr_to_reg (XEXP (operands[1], 0));
addr2 = copy_addr_to_reg (XEXP (operands[2], 0));
if (addr1 != XEXP (operands[1], 0))
...
...
@@ -17039,17 +17035,16 @@
if (addr2 != XEXP (operands[2], 0))
operands[2] = replace_equiv_address_nv (operands[2], addr2);
count = operands[3];
countreg = ix86_zero_extend_to_Pmode (count);
countreg = ix86_zero_extend_to_Pmode (operands[3]);
/* %%% Iff we are testing strict equality, we can use known alignment
to good advantage. This may be possible with combine, particularly
once cc0 is dead. */
align = operands[4];
if (CONST_INT_P (
count
))
if (CONST_INT_P (
operands[3]
))
{
if (
INTVAL (count) == 0
)
if (
operands[3] == const0_rtx
)
{
emit_move_insn (operands[0], const0_rtx);
DONE;
...
...
@@ -17064,12 +17059,9 @@
operands[1], operands[2]));
}
outlow = gen_lowpart (QImode, out);
emit_insn (gen_cmpintqi (outlow));
emit_move_insn (out, gen_rtx_SIGN_EXTEND (SImode, outlow));
if (operands[0] != out)
emit_move_insn (operands[0], out);
out = gen_lowpart (QImode, operands[0]);
emit_insn (gen_cmpintqi (out));
emit_move_insn (operands[0], gen_rtx_SIGN_EXTEND (SImode, out));
DONE;
})
...
...
@@ -19320,7 +19312,7 @@
(match_operand:SI 2 "const_int_operand"))]
"TARGET_3DNOW || TARGET_PREFETCH_SSE || TARGET_PRFCHW || TARGET_PREFETCHWT1"
{
bool write =
INTVAL (operands
[
1
]
) != 0
;
bool write =
operands
[
1
]
!= const0_rtx
;
int locality = INTVAL (operands
[
2
]
);
gcc_assert (IN_RANGE (locality, 0, 3));
...
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@@ -19385,7 +19377,7 @@
(const_int 3))]
"TARGET_3DNOW || TARGET_PRFCHW || TARGET_PREFETCHWT1"
{
if (
INTVAL (operands
[
1
]
) == 0
)
if (
operands
[
1
]
== const0_rtx
)
return "prefetch
\t
%a0";
else
return "prefetchw
\t
%a0";
...
...
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