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| author | Uros Bizjak <ubizjak@gmail.com> | 2022-01-05 20:06:03 +0100 |
|---|---|---|
| committer | Uros Bizjak <ubizjak@gmail.com> | 2022-01-05 20:07:22 +0100 |
| commit | 877c9e332f9b2b6eacd6ed4edf5790ee0f41a68f (patch) | |
| tree | d7726b9369ae020e8c36961056586715aaab7e8a /gcc/config/i386 | |
| parent | 85a3442c85aedb00c59e986f16cccbb8ec60d777 (diff) | |
| download | gcc-877c9e332f9b2b6eacd6ed4edf5790ee0f41a68f.zip gcc-877c9e332f9b2b6eacd6ed4edf5790ee0f41a68f.tar.gz gcc-877c9e332f9b2b6eacd6ed4edf5790ee0f41a68f.tar.bz2 | |
i386: Fix expand_vec_perm_pshufb for narrow modes [PR103905]
2022-01-05 Uroš Bizjak <ubizjak@gmail.com>
gcc/ChangeLog:
PR target/103905
* config/i386/i386-expand.c (expand_vec_perm_pshufb): Fix number of
narrow mode remapped elements for !one_operand_p case.
gcc/testsuite/ChangeLog:
PR target/103905
* gcc.target/i386/pr103905.c: New test.
Diffstat (limited to 'gcc/config/i386')
| -rw-r--r-- | gcc/config/i386/i386-expand.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c index e93ef1c..9bd8e53 100644 --- a/gcc/config/i386/i386-expand.c +++ b/gcc/config/i386/i386-expand.c @@ -18730,7 +18730,7 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d) { unsigned i, nelt, eltsz, mask; unsigned char perm[64]; - machine_mode vmode = V16QImode; + machine_mode vmode; struct expand_vec_perm_d nd; rtx rperm[64], vperm, target, op0, op1; @@ -18754,6 +18754,7 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d) case 16: if (!TARGET_XOP) return false; + vmode = V16QImode; break; case 32: @@ -18803,6 +18804,7 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d) case 16: if (!TARGET_SSSE3) return false; + vmode = V16QImode; break; case 32: @@ -18894,6 +18896,7 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d) /* Or if vpermps can be used. */ else if (d->vmode == V16SFmode) vmode = V16SImode; + if (vmode == V64QImode) { /* vpshufb only works intra lanes, it is not @@ -18946,8 +18949,10 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d) machine_mode vpmode = vmode; - if (vmode == V4QImode - || vmode == V8QImode) + nelt = GET_MODE_SIZE (vmode); + + /* Emulate narrow modes with V16QI instructions. */ + if (nelt < 16) { rtx m128 = GEN_INT (-128); @@ -18955,19 +18960,15 @@ expand_vec_perm_pshufb (struct expand_vec_perm_d *d) account for inactive top elements from the first operand. */ if (!d->one_operand_p) { - int sz = GET_MODE_SIZE (vmode); - for (i = 0; i < nelt; ++i) { - int ival = INTVAL (rperm[i]); - if (ival >= sz) - ival += 16-sz; - rperm[i] = GEN_INT (ival); + unsigned ival = UINTVAL (rperm[i]); + if (ival >= nelt) + rperm[i] = GEN_INT (ival + 16 - nelt); } } - /* V4QI/V8QI is emulated with V16QI instruction, fill inactive - elements in the top positions with zeros. */ + /* Fill inactive elements in the top positions with zeros. */ for (i = nelt; i < 16; ++i) rperm[i] = m128; |