diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 30 |
2 files changed, 18 insertions, 18 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3254036..7cddeab 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-03-21 Bill Schmidt <wschmidt@linux.vnet.ibm.com> + + * config/rs6000/rs6000.c (rs6000_expand_vector_set): Generate a + pattern for vector nor instead of subtract from splat(-1). + (altivec_expand_vec_perm_const_le): Likewise. + 2014-03-21 Richard Henderson <rth@twiddle.net> PR target/60598 diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 036a2af..fc837352 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -5633,12 +5633,10 @@ rs6000_expand_vector_set (rtx target, rtx val, int elt) else { /* Invert selector. */ - rtx splat = gen_rtx_VEC_DUPLICATE (V16QImode, - gen_rtx_CONST_INT (QImode, -1)); + rtx notx = gen_rtx_NOT (V16QImode, force_reg (V16QImode, x)); + rtx andx = gen_rtx_AND (V16QImode, notx, notx); rtx tmp = gen_reg_rtx (V16QImode); - emit_move_insn (tmp, splat); - x = gen_rtx_MINUS (V16QImode, tmp, force_reg (V16QImode, x)); - emit_move_insn (tmp, x); + emit_move_insn (tmp, andx); /* Permute with operands reversed and adjusted selector. */ x = gen_rtx_UNSPEC (mode, gen_rtvec (3, reg, target, tmp), @@ -30211,18 +30209,18 @@ altivec_expand_vec_perm_const_le (rtx operands[4]) /* Similarly to altivec_expand_vec_perm_const_le, we must adjust the permute control vector. But here it's not a constant, so we must - generate a vector splat/subtract to do the adjustment. */ + generate a vector NOR to do the adjustment. */ void altivec_expand_vec_perm_le (rtx operands[4]) { - rtx splat, unspec; + rtx notx, andx, unspec; rtx target = operands[0]; rtx op0 = operands[1]; rtx op1 = operands[2]; rtx sel = operands[3]; rtx tmp = target; - rtx splatreg = gen_reg_rtx (V16QImode); + rtx norreg = gen_reg_rtx (V16QImode); enum machine_mode mode = GET_MODE (target); /* Get everything in regs so the pattern matches. */ @@ -30235,18 +30233,14 @@ altivec_expand_vec_perm_le (rtx operands[4]) if (!REG_P (target)) tmp = gen_reg_rtx (mode); - /* SEL = splat(31) - SEL. */ - /* We want to subtract from 31, but we can't vspltisb 31 since - it's out of range. -1 works as well because only the low-order - five bits of the permute control vector elements are used. */ - splat = gen_rtx_VEC_DUPLICATE (V16QImode, - gen_rtx_CONST_INT (QImode, -1)); - emit_move_insn (splatreg, splat); - sel = gen_rtx_MINUS (V16QImode, splatreg, sel); - emit_move_insn (splatreg, sel); + /* Invert the selector with a VNOR. */ + notx = gen_rtx_NOT (V16QImode, sel); + andx = gen_rtx_AND (V16QImode, notx, notx); + emit_move_insn (norreg, andx); /* Permute with operands reversed and adjusted selector. */ - unspec = gen_rtx_UNSPEC (mode, gen_rtvec (3, op1, op0, splatreg), UNSPEC_VPERM); + unspec = gen_rtx_UNSPEC (mode, gen_rtvec (3, op1, op0, norreg), + UNSPEC_VPERM); /* Copy into target, possibly by way of a register. */ if (!REG_P (target)) |