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MIPS: Add pattern for clo

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gcc/ChangeLog:

	* config/mips/mips.md (*clo<mode>2): New pattern.

gcc/testsuite/ChangeLog:

	* gcc.target/mips/clz.c: New test.
	* gcc.target/mips/clo.c: New test.
	* gcc.target/mips/mips.exp: New option HAS_CLZ.

Signed-off-by: Junxian Zhu <zhujunxian@oss.cipunited.com>
This commit is contained in:
Junxian Zhu 2023-02-17 16:35:56 +08:00 • committed by YunQiang Su
parent a3a45f0b14
commit 19aa3900bc
4 changed files with 33 additions and 0 deletions
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9
gcc/config/mips/mips.md
View file

@ -3166,6 +3166,15 @@
[(set_attr "type" "clz")
(set_attr "mode" "<MODE>")])
(define_insn "*clo<mode>2"
[(set (match_operand:GPR 0 "register_operand" "=d")
(clz:GPR (not:GPR (match_operand:GPR 1 "register_operand" "d"))))]
"ISA_HAS_CLZ_CLO"
"<d>clo\t%0,%1"
[(set_attr "type" "clz")
(set_attr "mode" "<MODE>")])
;;
;; ...................
;;

11
gcc/testsuite/gcc.target/mips/clo.c Normal file
View file

@ -0,0 +1,11 @@
/* { dg-do compile } */
/* { dg-options "(HAS_CLZ)" } */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
NOMIPS16 unsigned int foo(unsigned int x)
{
return __builtin_clz (~x);
}
/* { dg-final { scan-assembler-not "\tclz\t" } } */
/* { dg-final { scan-assembler "\tclo\t" } } */

10
gcc/testsuite/gcc.target/mips/clz.c Normal file
View file

@ -0,0 +1,10 @@
/* { dg-do compile } */
/* { dg-options "(HAS_CLZ)" } */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" } { "" } } */
NOMIPS16 unsigned int foo(unsigned int x)
{
return __builtin_clz (x);
}
/* { dg-final { scan-assembler "\tclz\t" } } */

3
gcc/testsuite/gcc.target/mips/mips.exp
View file

@ -252,6 +252,7 @@ set mips_option_groups {
warnings "-w"
dump "-fdump-.*"
ins "HAS_INS"
clz "HAS_CLZ"
dmul "NOT_HAS_DMUL"
ldc "HAS_LDC"
movn "HAS_MOVN"
@ -1198,11 +1199,13 @@ proc mips-dg-options { args } {
#
# - paired-single instructions(*)
# - odd numbered single precision registers
# - clz clo instructions
#
# (*) Note that we don't support MIPS V at the moment.
} elseif { $isa_rev < 1
&& ([mips_have_test_option_p options "-mpaired-single"]
|| ([mips_have_test_option_p options "-modd-spreg"]
|| [mips_have_test_option_p options "HAS_CLZ"]
&& ![mips_have_test_option_p options "-mfp64"]))} {
if { $gp_size == 32 } {
mips_make_test_option options "-mips32"