diff options
| author | Richard Sandiford <richard.sandiford@arm.com> | 2019-06-18 14:51:02 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2019-06-18 14:51:02 +0000 |
| commit | e7053b0c7cf3f1cd8a23cc71e7e36ec29c46b217 (patch) | |
| tree | c121677959842a54e24c7166e23c94cfe4187785 /gcc | |
| parent | 16de3637c4df37e0203b3ad52b238887e6ca38fc (diff) | |
| download | gcc-e7053b0c7cf3f1cd8a23cc71e7e36ec29c46b217.zip gcc-e7053b0c7cf3f1cd8a23cc71e7e36ec29c46b217.tar.gz gcc-e7053b0c7cf3f1cd8a23cc71e7e36ec29c46b217.tar.bz2 | |
[AArch64] Factor out pfalse predicate creation
Following on from the previous ptrue patch.
2019-06-18 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* config/aarch64/aarch64-protos.h (aarch64_pfalse_reg): Declare.
* config/aarch64/aarch64.c (aarch64_pfalse_reg): New function.
* config/aarch64/aarch64-sve.md: Use it.
From-SVN: r272425
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64-protos.h | 1 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64-sve.md | 2 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 9 |
4 files changed, 17 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4176498..ce470a8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2019-06-18 Richard Sandiford <richard.sandiford@arm.com> + * config/aarch64/aarch64-protos.h (aarch64_pfalse_reg): Declare. + * config/aarch64/aarch64.c (aarch64_pfalse_reg): New function. + * config/aarch64/aarch64-sve.md: Use it. + +2019-06-18 Richard Sandiford <richard.sandiford@arm.com> + * config/aarch64/aarch64-protos.h (aarch64_ptrue_reg): Declare. * config/aarch64/aarch64.c (aarch64_ptrue_reg): New functions. (aarch64_expand_sve_widened_duplicate, aarch64_expand_sve_mem_move) diff --git a/gcc/config/aarch64/aarch64-protos.h b/gcc/config/aarch64/aarch64-protos.h index 3a8be22..4b20796 100644 --- a/gcc/config/aarch64/aarch64-protos.h +++ b/gcc/config/aarch64/aarch64-protos.h @@ -521,6 +521,7 @@ void aarch64_err_no_fpadvsimd (machine_mode); void aarch64_expand_epilogue (bool); void aarch64_expand_mov_immediate (rtx, rtx, rtx (*) (rtx, rtx) = 0); rtx aarch64_ptrue_reg (machine_mode); +rtx aarch64_pfalse_reg (machine_mode); void aarch64_emit_sve_pred_move (rtx, rtx, rtx); void aarch64_expand_sve_mem_move (rtx, rtx, machine_mode); bool aarch64_maybe_expand_sve_subreg_move (rtx, rtx); diff --git a/gcc/config/aarch64/aarch64-sve.md b/gcc/config/aarch64/aarch64-sve.md index eef8ed6..9055ae5 100644 --- a/gcc/config/aarch64/aarch64-sve.md +++ b/gcc/config/aarch64/aarch64-sve.md @@ -488,7 +488,7 @@ { /* The last element can be extracted with a LASTB and a false predicate. */ - rtx sel = force_reg (<VPRED>mode, CONST0_RTX (<VPRED>mode)); + rtx sel = aarch64_pfalse_reg (<VPRED>mode); emit_insn (gen_extract_last_<mode> (operands[0], sel, operands[1])); DONE; } diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index d5dca76..9a30d15 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -2467,6 +2467,15 @@ aarch64_ptrue_reg (machine_mode mode) return force_reg (mode, CONSTM1_RTX (mode)); } +/* Return an all-false predicate register of mode MODE. */ + +rtx +aarch64_pfalse_reg (machine_mode mode) +{ + gcc_assert (GET_MODE_CLASS (mode) == MODE_VECTOR_BOOL); + return force_reg (mode, CONST0_RTX (mode)); +} + /* Return true if we can move VALUE into a register using a single CNT[BHWD] instruction. */ |