https://gcc.gnu.org/g:5305f84c3be3de9397907dfaf151477579d91c77
commit r16-2789-g5305f84c3be3de9397907dfaf151477579d91c77
Author: Richard Sandiford <richard.sandif...@arm.com>
Date: Tue Aug 5 14:42:34 2025 +0100
i386: Extend recognition of high-reg rvalues [PR121306]
The i386 high-register patterns used things like:
(match_operator:SWI248 2 "extract_operator"
[(match_operand 0 "int248_register_operand" "Q")
(const_int 8)
(const_int 8)])
to match an extraction of a high register such as AH from AX/EAX/RAX.
This construct is used in contexts where only the low 8 bits of the
value matter. This is either done explicitly using a (subreg:QI ... 0)
or implicitly by assigning to an 8-bit zero_extract destination.
extract_operator therefore matches both sign_extract and zero_extract,
since the signedness of the extension beyond 8 bits is irrelevant.
But the fact that only the low 8 bits of the value are significant
means that a shift right by 8 is as good as an extraction. Shifts
right would already be used for things like:
struct s {
long a:8;
long b:8;
long c:48;
};
struct s f(struct s x, long y, long z) {
x.b = (y & z) >> 8;
return x;
}
but are used more after g:965564eafb721f8000013a3112f1bba8d8fae32b.
This patch therefore replaces extract_operator with a new predicate
called extract_high_operator that matches both extractions and shifts.
The predicate checks the extraction field and shift amount itself,
so that patterns only need to match the first operand.
Splitters used match_op_dup to preserve the choice of extraction.
But the fact that the extractions (and now shifts) are equivalent
means that we can just as easily canonicalise on one of them.
(In theory, canonicalisation would also promote CSE, although
that's unlikely in practice.) The patch goes for zero_extract,
for consistency with destinations.
gcc/
PR target/121306
* config/i386/predicates.md (extract_operator): Replace with...
(extract_high_operator): ...this new predicate.
* config/i386/i386.md (*cmpqi_ext<mode>_1, *cmpqi_ext<mode>_2)
(*cmpqi_ext<mode>_3, *cmpqi_ext<mode>_4, *movstrictqi_ext<mode>_1)
(*extzv<mode>, *insvqi_2, *extendqi<SWI24:mode>_ext_1)
(*addqi_ext<mode>_1_slp, *addqi_ext<mode>_1_slp, *addqi_ext<mode>_0)
(*addqi_ext2<mode>_0, *addqi_ext<mode>_1, *<insn>qi_ext<mode>_2)
(*subqi_ext<mode>_1_slp, *subqi_ext<mode>_2_slp, *subqi_ext<mode>_0)
(*subqi_ext2<mode>_0, *subqi_ext<mode>_1, *testqi_ext<mode>_1)
(*testqi_ext<mode>_2, *<code>qi_ext<mode>_1_slp)
(*<code>qi_ext<mode>_2_slp. *<code>qi_ext<mode>_0)
(*<code>qi_ext2<mode>_0, *<code>qi_ext<mode>_1)
(*<code>qi_ext<mode>_1_cc, *<code>qi_ext<mode>_1_cc)
(*<code>qi_ext<mode>_2, *<code>qi_ext<mode>_3, *negqi_ext<mode>_1)
(*one_cmplqi_ext<mode>_1, *ashlqi_ext<mode>_1,
*<insn>qi_ext<mode>_1)
(define_peephole2): Replace uses of extract_operator with
extract_high_operator, matching only the first operand.
Use zero_extract rather than match_op_dup when splitting.
Diff:
---
gcc/config/i386/i386.md | 398 ++++++++++++++++--------------------------
gcc/config/i386/predicates.md | 8 +-
2 files changed, 161 insertions(+), 245 deletions(-)
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index a9d1948e4410..2b0dd66c68b6 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -1618,10 +1618,8 @@
(compare
(match_operand:QI 0 "nonimmediate_operand" "QBn")
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))]
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)))]
"ix86_match_ccmode (insn, CCmode)"
"cmp{b}\t{%h1, %0|%0, %h1}"
[(set_attr "addr" "gpr8")
@@ -1632,10 +1630,8 @@
[(set (reg FLAGS_REG)
(compare
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 0 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 0 "int248_register_operand" "Q")]) 0)
(match_operand:QI 1 "const0_operand")))]
"ix86_match_ccmode (insn, CCNOmode)"
"test{b}\t%h0, %h0"
@@ -1657,10 +1653,8 @@
[(set (reg FLAGS_REG)
(compare
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 0 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 0 "int248_register_operand" "Q")]) 0)
(match_operand:QI 1 "general_operand" "QnBn")))]
"ix86_match_ccmode (insn, CCmode)"
"cmp{b}\t{%1, %h0|%h0, %1}"
@@ -1672,15 +1666,11 @@
[(set (reg FLAGS_REG)
(compare
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 0 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 0 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))]
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)))]
"ix86_match_ccmode (insn, CCmode)"
"cmp{b}\t{%h1, %h0|%h0, %h1}"
[(set_attr "type" "icmp")
@@ -3480,10 +3470,8 @@
[(set (strict_low_part
(match_operand:QI 0 "register_operand" "+Q"))
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0))]
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
"mov{b}\t{%h1, %0|%0, %h1}"
[(set_attr "type" "imov")
@@ -3566,10 +3554,8 @@
(define_insn "*extzvqi"
[(set (match_operand:QI 0 "nonimmediate_operand" "=QBn,?R")
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q,Q")
- (const_int 8)
- (const_int 8)]) 0))]
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q,Q")]) 0))]
""
{
switch (get_attr_type (insn))
@@ -3690,10 +3676,8 @@
(match_operand 0 "int248_register_operand" "+Q")
(const_int 8)
(const_int 8))
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]))]
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]))]
""
"mov{b}\t{%h1, %h0|%h0, %h1}"
[(set_attr "type" "imov")
@@ -5260,10 +5244,8 @@
[(set (match_operand:SWI24 0 "register_operand" "=R")
(sign_extend:SWI24
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))]
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)))]
""
"movs{b<SWI24:imodesuffix>|x}\t{%h1, %0|%0, %h1}"
[(set_attr "type" "imovx")
@@ -7009,10 +6991,8 @@
[(set (strict_low_part (match_operand:QI 0 "register_operand" "+Q,&Q"))
(plus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q,Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q,Q")]) 0)
(match_operand:QI 1 "nonimmediate_operand" "0,!qm")))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
@@ -7026,8 +7006,8 @@
[(set (strict_low_part (match_dup 0))
(plus:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)
(match_dup 0)))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -7038,29 +7018,25 @@
[(set (strict_low_part (match_operand:QI 0 "register_operand" "+&Q"))
(plus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
"#"
"&& reload_completed"
[(set (strict_low_part (match_dup 0))
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0))
(parallel
[(set (strict_low_part (match_dup 0))
(plus:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0)
(match_dup 0)))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -7475,10 +7451,8 @@
[(set (match_operand:QI 0 "nonimmediate_operand" "=QBn")
(plus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)
(match_operand:QI 1 "nonimmediate_operand" "0")))
(clobber (reg:CC FLAGS_REG))]
""
@@ -7491,29 +7465,25 @@
[(set (match_operand:QI 0 "register_operand" "=&Q")
(plus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
""
"#"
"&& reload_completed"
[(set (match_dup 0)
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0))
(parallel
[(set (match_dup 0)
(plus:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0)
(match_dup 0)))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -7543,10 +7513,8 @@
(subreg:SWI248
(plus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)
(match_operand:QI 2 "general_operand" "QnBn,QnBn")) 0))
(clobber (reg:CC FLAGS_REG))]
""
@@ -7581,8 +7549,8 @@
(subreg:SWI248
(plus:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -7602,15 +7570,11 @@
(subreg:SWI248
(plusminus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "<comm>0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "<comm>0,!Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q,Q")
- (const_int 8)
- (const_int 8)]) 0)) 0))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q,Q")]) 0)) 0))
(clobber (reg:CC FLAGS_REG))]
""
"@
@@ -7629,11 +7593,11 @@
(subreg:SWI248
(plusminus:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)) 0))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
[(set_attr "type" "alu")
@@ -8230,10 +8194,8 @@
(minus:QI
(match_operand:QI 1 "nonimmediate_operand" "0,!qm")
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q,Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q,Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
"@
@@ -8247,8 +8209,8 @@
(minus:QI
(match_dup 0)
(subreg:QI
- (match_op_dup 3
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)))
(clobber (reg:CC FLAGS_REG))])]
""
[(set_attr "type" "alu")
@@ -8258,30 +8220,26 @@
[(set (strict_low_part (match_operand:QI 0 "register_operand" "+&Q"))
(minus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
"#"
"&& reload_completed"
[(set (strict_low_part (match_dup 0))
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0))
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0))
(parallel
[(set (strict_low_part (match_dup 0))
(minus:QI
(match_dup 0)
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)))
(clobber (reg:CC FLAGS_REG))])]
""
[(set_attr "type" "alu")
@@ -8332,10 +8290,8 @@
(minus:QI
(match_operand:QI 1 "nonimmediate_operand" "0")
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
""
"sub{b}\t{%h2, %0|%0, %h2}"
@@ -8347,30 +8303,26 @@
[(set (match_operand:QI 0 "register_operand" "=&Q")
(minus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
""
"#"
"&& reload_completed"
[(set (match_dup 0)
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0))
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0))
(parallel
[(set (match_dup 0)
(minus:QI
(match_dup 0)
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)))
(clobber (reg:CC FLAGS_REG))])]
""
[(set_attr "type" "alu")
@@ -8385,10 +8337,8 @@
(subreg:SWI248
(minus:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)
(match_operand:QI 2 "general_operand" "QnBn,QnBn")) 0))
(clobber (reg:CC FLAGS_REG))]
""
@@ -8407,8 +8357,8 @@
(subreg:SWI248
(minus:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -12356,10 +12306,8 @@
(compare
(and:QI
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 0 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 0 "int248_register_operand" "Q")]) 0)
(match_operand:QI 1 "general_operand" "QnBn"))
(const_int 0)))]
"ix86_match_ccmode (insn, CCNOmode)"
@@ -12373,15 +12321,11 @@
(compare
(and:QI
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 0 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 0 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0))
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0))
(const_int 0)))]
"ix86_match_ccmode (insn, CCNOmode)"
"test{b}\t{%h1, %h0|%h0, %h1}"
@@ -12970,10 +12914,8 @@
[(set (strict_low_part (match_operand:QI 0 "register_operand" "+Q,&Q"))
(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q,Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q,Q")]) 0)
(match_operand:QI 1 "nonimmediate_operand" "0,!qm")))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
@@ -12987,8 +12929,8 @@
[(set (strict_low_part (match_dup 0))
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)
(match_dup 0)))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -12999,29 +12941,25 @@
[(set (strict_low_part (match_operand:QI 0 "register_operand" "+&Q"))
(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
"!TARGET_PARTIAL_REG_STALL || optimize_function_for_size_p (cfun)"
"#"
"&& reload_completed"
[(set (strict_low_part (match_dup 0))
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0))
(parallel
[(set (strict_low_part (match_dup 0))
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0)
(match_dup 0)))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -13224,10 +13162,8 @@
[(set (match_operand:QI 0 "nonimmediate_operand" "=QBn")
(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)
(match_operand:QI 1 "nonimmediate_operand" "0")))
(clobber (reg:CC FLAGS_REG))]
""
@@ -13240,29 +13176,25 @@
[(set (match_operand:QI 0 "register_operand" "=&Q")
(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q")
- (const_int 8)
- (const_int 8)]) 0)))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q")]) 0)))
(clobber (reg:CC FLAGS_REG))]
""
"#"
"&& reload_completed"
[(set (match_dup 0)
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0))
(parallel
[(set (match_dup 0)
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0)
(match_dup 0)))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -13292,10 +13224,8 @@
(subreg:SWI248
(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)
(match_operand:QI 2 "general_operand" "QnBn,QnBn")) 0))
(clobber (reg:CC FLAGS_REG))]
""
@@ -13314,8 +13244,8 @@
(subreg:SWI248
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -13329,10 +13259,8 @@
(match_operator 5 "compare_operator"
[(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)
(match_operand:QI 2 "general_operand" "QnBn,QnBn"))
(const_int 0)]))
(set (zero_extract:SWI248
@@ -13342,8 +13270,8 @@
(subreg:SWI248
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))]
"ix86_match_ccmode (insn, CCNOmode)"
"@
@@ -13359,9 +13287,9 @@
[(set (match_dup 4)
(match_op_dup 5
[(any_logic:QI
- (subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (subreg:QI
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2))
(const_int 0)]))
(set (zero_extract:SWI248
@@ -13369,8 +13297,8 @@
(subreg:SWI248
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 1) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 1) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))])]
""
[(set_attr "addr" "gpr8")
@@ -13386,15 +13314,11 @@
(subreg:SWI248
(any_logic:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "%0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "%0,!Q")]) 0)
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand" "Q,Q")
- (const_int 8)
- (const_int 8)]) 0)) 0))
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand" "Q,Q")]) 0)) 0))
(clobber (reg:CC FLAGS_REG))]
""
"@
@@ -13413,11 +13337,11 @@
(subreg:SWI248
(any_logic:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(subreg:QI
- (match_op_dup 4
- [(match_dup 2) (const_int 8) (const_int 8)]) 0)) 0))
+ (zero_extract:SWI248
+ (match_dup 2) (const_int 8) (const_int 8)) 0)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
[(set_attr "type" "alu")
@@ -13429,12 +13353,10 @@
(match_operand 0 "int248_register_operand" "+Q,&Q")
(const_int 8)
(const_int 8))
- (match_operator:SWI248 3 "extract_operator"
+ (match_operator:SWI248 3 "extract_high_operator"
[(any_logic
(match_operand 1 "int248_register_operand" "%0,!Q")
- (match_operand 2 "int248_register_operand" "Q,Q"))
- (const_int 8)
- (const_int 8)]))
+ (match_operand 2 "int248_register_operand" "Q,Q"))]))
(clobber (reg:CC FLAGS_REG))]
"GET_MODE (operands[1]) == GET_MODE (operands[2])"
"@
@@ -13450,9 +13372,9 @@
(parallel
[(set (zero_extract:SWI248
(match_dup 0) (const_int 8) (const_int 8))
- (match_op_dup 3
- [(any_logic (match_dup 4) (match_dup 2))
- (const_int 8) (const_int 8)]))
+ (zero_extract:SWI248
+ (any_logic (match_dup 4) (match_dup 2))
+ (const_int 8) (const_int 8)))
(clobber (reg:CC FLAGS_REG))])]
"operands[4] = gen_lowpart (GET_MODE (operands[1]), operands[0]);"
[(set_attr "type" "alu")
@@ -14697,10 +14619,8 @@
(subreg:SWI248
(neg:QI
(subreg:QI
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)) 0))
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)) 0))
(clobber (reg:CC FLAGS_REG))]
""
"@
@@ -14718,8 +14638,8 @@
(subreg:SWI248
(neg:QI
(subreg:QI
- (match_op_dup 2
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)) 0))
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
[(set_attr "type" "negnot")
@@ -15352,10 +15272,8 @@
(const_int 8)
(const_int 8))
(not:SWI248
- (match_operator:SWI248 2 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)])))]
+ (match_operator:SWI248 2 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")])))]
""
"@
not{b}\t%h0
@@ -15369,7 +15287,7 @@
(set (zero_extract:SWI248
(match_dup 0) (const_int 8) (const_int 8))
(not:SWI248
- (match_op_dup 2 [(match_dup 0) (const_int 8) (const_int 8)])))]
+ (zero_extract:SWI248 (match_dup 0) (const_int 8) (const_int 8))))]
""
[(set_attr "type" "negnot")
(set_attr "mode" "QI")])
@@ -16716,10 +16634,8 @@
(subreg:SWI248
(ashift:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)
(match_operand:QI 2 "nonmemory_operand" "cI,cI")) 0))
(clobber (reg:CC FLAGS_REG))]
""
@@ -16753,8 +16669,8 @@
(subreg:SWI248
(ashift:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -18000,10 +17916,8 @@
(subreg:SWI248
(any_shiftrt:QI
(subreg:QI
- (match_operator:SWI248 3 "extract_operator"
- [(match_operand 1 "int248_register_operand" "0,!Q")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 3 "extract_high_operator"
+ [(match_operand 1 "int248_register_operand" "0,!Q")]) 0)
(match_operand:QI 2 "nonmemory_operand" "cI,cI")) 0))
(clobber (reg:CC FLAGS_REG))]
""
@@ -18029,8 +17943,8 @@
(subreg:SWI248
(any_shiftrt:QI
(subreg:QI
- (match_op_dup 3
- [(match_dup 0) (const_int 8) (const_int 8)]) 0)
+ (zero_extract:SWI248
+ (match_dup 0) (const_int 8) (const_int 8)) 0)
(match_dup 2)) 0))
(clobber (reg:CC FLAGS_REG))])]
""
@@ -28247,10 +28161,8 @@
(match_operator 1 "compare_operator"
[(and:QI
(subreg:QI
- (match_operator:SWI248 4 "extract_operator"
- [(match_operand 2 "int248_register_operand")
- (const_int 8)
- (const_int 8)]) 0)
+ (match_operator:SWI248 4 "extract_high_operator"
+ [(match_operand 2 "int248_register_operand")]) 0)
(match_operand 3 "const_int_operand"))
(const_int 0)]))]
"! TARGET_PARTIAL_REG_STALL
@@ -28262,9 +28174,9 @@
(match_op_dup 1
[(and:QI
(subreg:QI
- (match_op_dup 4 [(match_dup 2)
- (const_int 8)
- (const_int 8)]) 0)
+ (zero_extract:SWI248 (match_dup 2)
+ (const_int 8)
+ (const_int 8)) 0)
(match_dup 3))
(const_int 0)]))
(set (zero_extract:SWI248 (match_dup 2)
@@ -28273,9 +28185,9 @@
(subreg:SWI248
(and:QI
(subreg:QI
- (match_op_dup 4 [(match_dup 2)
- (const_int 8)
- (const_int 8)]) 0)
+ (zero_extract:SWI248 (match_dup 2)
+ (const_int 8)
+ (const_int 8)) 0)
(match_dup 3)) 0))])])
;; Don't do logical operations with memory inputs.
diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
index b2d2eecc64f6..0f310902e7b4 100644
--- a/gcc/config/i386/predicates.md
+++ b/gcc/config/i386/predicates.md
@@ -1740,8 +1740,12 @@
(define_predicate "compare_operator"
(match_code "compare"))
-(define_predicate "extract_operator"
- (match_code "zero_extract,sign_extract"))
+(define_predicate "extract_high_operator"
+ (match_code "zero_extract,sign_extract,ashiftrt,lshiftrt")
+{
+ return (const8_operand (XEXP (op, 1), VOIDmode)
+ && (BINARY_P (op) || const8_operand (XEXP (op, 2), VOIDmode)));
+})
;; Return true if OP is a memory operand, aligned to
;; less than its natural alignment.
