diff options
| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-07 09:53:18 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-07 09:53:18 +0000 |
| commit | 3029ee001838500910ea59138458cdfe14f4bc73 (patch) | |
| tree | 4f6ee96bfcae70116965086e9e927ad54c03d975 | |
| parent | 406034fa4b563e02d1570ec6d1457688c932536d (diff) | |
* config/alpha/alpha.c (alpha_emit_conditional_move): Fail
if we discover we need a pseudo and no_new_pseudos is true.
* config/alpha/alpha.md (ne:DI insn): New.
(trunctfsf2, sne): Emit NE instead of non-canonical LTU.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32998 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.c | 5 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.md | 14 |
3 files changed, 23 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 75360a097dc..2ff67110f62 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 2000-04-07 Richard Henderson <rth@cygnus.com> + * config/alpha/alpha.c (alpha_emit_conditional_move): Fail + if we discover we need a pseudo and no_new_pseudos is true. + * config/alpha/alpha.md (ne:DI insn): New. + (trunctfsf2, sne): Emit NE instead of non-canonical LTU. + +2000-04-07 Richard Henderson <rth@cygnus.com> + * rtl.def (COND_EXEC): New. * rtl.h (COND_EXEC_TEST, COND_EXEC_CODE): New. * tm.texi (MAX_CONDITIONAL_EXECUTE): Document. diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c index a547a9292ac..7d82f3062b0 100644 --- a/gcc/config/alpha/alpha.c +++ b/gcc/config/alpha/alpha.c @@ -1769,11 +1769,14 @@ alpha_emit_conditional_move (cmp, mode) && (op0 == CONST0_RTX (cmp_mode) || op1 == CONST0_RTX (cmp_mode))) return gen_rtx_fmt_ee (code, VOIDmode, op0, op1); - /* We can't put the comparison insides a conditional move; + /* We can't put the comparison inside the conditional move; emit a compare instruction and put that inside the conditional move. Make sure we emit only comparisons we have; swap or reverse as necessary. */ + if (no_new_pseudos) + return NULL_RTX; + switch (code) { case EQ: case LE: case LT: case LEU: case LTU: diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index 03c70036416..5b9dd8e9459 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -2240,7 +2240,7 @@ which prevents rounding error in the final conversion to SFmode. */ emit_insn (gen_rtx_SET (VOIDmode, sticky, - gen_rtx_LTU (DImode, const0_rtx, lo))); + gen_rtx_NE (DImode, lo, const0_rtx))); emit_insn (gen_iordi3 (hi, hi, sticky)); emit_insn (gen_trunctfdf2 (tmpf, arg)); emit_insn (gen_truncdfsf2 (operands[0], tmpf)); @@ -2497,6 +2497,14 @@ (define_insn "" [(set (match_operand:DI 0 "register_operand" "=r") + (ne:DI (match_operand:DI 1 "reg_or_8bit_operand" "rI") + (const_int 0)))] + "" + "cmpult $31,%1,%0" + [(set_attr "type" "icmp")]) + +(define_insn "" + [(set (match_operand:DI 0 "register_operand" "=r") (match_operator:DI 1 "alpha_comparison_operator" [(match_operand:DI 2 "reg_or_0_operand" "rJ") (match_operand:DI 3 "reg_or_8bit_operand" "rI")]))] @@ -3314,7 +3322,9 @@ if (alpha_compare.op1 == const0_rtx) { - emit_insn (gen_sgtu (operands[0])); + operands[1] = gen_rtx_NE (DImode, alpha_compare.op0, alpha_compare.op1); + alpha_compare.op0 = alpha_compare.op1 = NULL_RTX; + emit_insn (gen_rtx_SET (VOIDmode, operands[0], operands[1])); DONE; } |