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| author | Richard Kenner <kenner@gcc.gnu.org> | 1993-11-04 19:02:52 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1993-11-04 19:02:52 -0500 |
| commit | 4eae5fe18f93432fde3d744d5ddeda6d85efdedd (patch) | |
| tree | 4ada9a2e25fd784807c135a484032d52dae013b3 | |
| parent | 3a322c50e1f6cd93718cf2281b24d2b77c48735a (diff) | |
| download | gcc-4eae5fe18f93432fde3d744d5ddeda6d85efdedd.zip gcc-4eae5fe18f93432fde3d744d5ddeda6d85efdedd.tar.gz gcc-4eae5fe18f93432fde3d744d5ddeda6d85efdedd.tar.bz2 | |
(movdf): Don't have reload choose alternative of loading a constant
into a GPR.
From-SVN: r6001
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 317662c..4592cba 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -3059,8 +3059,14 @@ operands[4] = operand_subword (operands[0], 1, 0, DFmode); operands[5] = operand_subword (operands[1], 1, 0, DFmode); }") -(define_insn "" - [(set (match_operand:DF 0 "nonimmediate_operand" "=!r,r,o,r,f,f,m") +;; Don't have reload use general registers to load a constant. First, +;; it might not work if the output operand has is the equivalent of +;; a non-offsettable memref, but also it is less efficient than loading +;; the constant into an FP register, since it will probably be used there. +;; The "??" is a kludge until we can figure out a more reasonable way +;; of handling these non-offsettable values. +(define_insn "" + [(set (match_operand:DF 0 "nonimmediate_operand" "=!r,??r,o,!r,f,f,m") (match_operand:DF 1 "input_operand" "r,o,r,G,f,m,f"))] "register_operand (operands[0], DFmode) || register_operand (operands[1], DFmode)" |