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