https://gcc.gnu.org/g:213c64962d24fa8a4b2f3d7a9c5508f9daed9fa2
commit r16-572-g213c64962d24fa8a4b2f3d7a9c5508f9daed9fa2
Author: Andrew Pinski <quic_apin...@quicinc.com>
Date: Sun May 11 22:11:38 2025 -0700
optabs: Remove cmov optab [PR120230]
cmov optab was added back in r0-24110-g1c0290eaac4094
(https://gcc.gnu.org/pipermail/gcc-patches/1999-September/018596.html)
but it was never used. movcc is used instead and since
r0-93453-gf90b7a5a7913cc (cond-optab),
movcc becomes what cmov_optab was going to be; in having a combined compare
and move optab.
Note the only target which seems to have implemented this optab is aarch64;
will remove
that in a different patch.
Bootstrapped and tested on x86_64-linux-gnu.
PR middle-end/120230
gcc/ChangeLog:
* optabs.cc (can_compare_p): Remove support for ccp_cmov.
* optabs.def (cmov_optab): Remove.
* optabs.h (can_compare_purpose): Remove ccp_cmov.
Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
Diff:
---
gcc/optabs.cc | 3 ---
gcc/optabs.def | 1 -
gcc/optabs.h | 3 +--
3 files changed, 1 insertion(+), 6 deletions(-)
diff --git a/gcc/optabs.cc b/gcc/optabs.cc
index 0a14b1eef8a5..fe68a25ffd43 100644
--- a/gcc/optabs.cc
+++ b/gcc/optabs.cc
@@ -4304,9 +4304,6 @@ can_compare_p (enum rtx_code code, machine_mode mode,
&& (icode = optab_handler (cstore_optab, mode)) != CODE_FOR_nothing
&& insn_operand_matches (icode, 1, test))
return true;
- if (purpose == ccp_cmov
- && optab_handler (cmov_optab, mode) != CODE_FOR_nothing)
- return true;
mode = GET_MODE_WIDER_MODE (mode).else_void ();
PUT_MODE (test, mode);
diff --git a/gcc/optabs.def b/gcc/optabs.def
index 23f792352388..0c1435d4ecd7 100644
--- a/gcc/optabs.def
+++ b/gcc/optabs.def
@@ -294,7 +294,6 @@ OPTAB_D (cond_len_fnms_optab, "cond_len_fnms$a")
OPTAB_D (cond_len_neg_optab, "cond_len_neg$a")
OPTAB_D (cond_len_one_cmpl_optab, "cond_len_one_cmpl$a")
OPTAB_D (vcond_mask_len_optab, "vcond_mask_len_$a")
-OPTAB_D (cmov_optab, "cmov$a6")
OPTAB_D (cstore_optab, "cstore$a4")
OPTAB_D (ctrap_optab, "ctrap$a4")
OPTAB_D (addv4_optab, "addv$I$a4")
diff --git a/gcc/optabs.h b/gcc/optabs.h
index 23fa77be24ea..ae525c848d32 100644
--- a/gcc/optabs.h
+++ b/gcc/optabs.h
@@ -244,11 +244,10 @@ extern void emit_unop_insn (enum insn_code, rtx, rtx,
enum rtx_code);
extern void emit_libcall_block (rtx_insn *, rtx, rtx, rtx);
/* The various uses that a comparison can have; used by can_compare_p:
- jumps, conditional moves, store flag operations. */
+ jumps, store flag operations. */
enum can_compare_purpose
{
ccp_jump,
- ccp_cmov,
ccp_store_flag
};
