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| author | Jiufu Guo <guojiufu@linux.ibm.com> | 2022-09-07 13:32:55 +0800 |
|---|---|---|
| committer | Jiufu Guo <guojiufu@linux.ibm.com> | 2022-09-07 13:35:18 +0800 |
| commit | ea6e89e07f4223c8ac7877508c62bba368084999 (patch) | |
| tree | 2f21753b23096cbf980084200ea4765b6e97aec2 /gcc | |
| parent | 34ea461fdb471b4d9afa555da69dbc6d02713c54 (diff) | |
| download | gcc-ea6e89e07f4223c8ac7877508c62bba368084999.zip gcc-ea6e89e07f4223c8ac7877508c62bba368084999.tar.gz gcc-ea6e89e07f4223c8ac7877508c62bba368084999.tar.bz2 | |
rs6000: remove unused splitter on const_scalar_int_operand
There are two splitters, both are calling rs6000_emit_set_const to emit
instructions for constant building.
One splitter checks `const_int_operand`, this splitter is always used.
Another spitter checks `const_scalar_int_operand`, this one is never
used now.
Checking the history, that splitter is introduced around 1999 for
HOST_BITS_PER_WIDE_INT=32, as below:
(define_split
[(set (match_operand:DI 0 "gpc_reg_operand" "")
(match_operand:DI 1 "const_double_operand" ""))]
"HOST_BITS_PER_WIDE_INT == 32 && TARGET_POWERPC64
&& num_insns_constant (operands[1], DImode) > 1"
And `HOST_BITS_PER_WIDE_INT == 32` is eliminated later, since it is
`const_double_operand` can cover it.
When wide_int is introduced, `const_double_operand` is replaced by
`const_scalar_int_operand`.
Now, HOST_BITS_PER_WIDE_INT is forced to 64, this splitter is safe
to remove.
gcc/ChangeLog:
* config/rs6000/rs6000.md (const_scalar_int splitter): Remove.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 85b9738..959fad2 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -9713,18 +9713,6 @@ }) (define_split - [(set (match_operand:DI 0 "int_reg_operand_not_pseudo") - (match_operand:DI 1 "const_scalar_int_operand"))] - "TARGET_POWERPC64 && num_insns_constant (operands[1], DImode) > 1" - [(pc)] -{ - if (rs6000_emit_set_const (operands[0], operands[1])) - DONE; - else - FAIL; -}) - -(define_split [(set (match_operand:DI 0 "altivec_register_operand") (match_operand:DI 1 "s5bit_cint_operand"))] "TARGET_VSX && reload_completed" |