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| author | Paolo Bonzini <bonzini@gcc.gnu.org> | 2006-01-26 18:45:29 +0000 |
|---|---|---|
| committer | Paolo Bonzini <bonzini@gcc.gnu.org> | 2006-01-26 18:45:29 +0000 |
| commit | e046a30ab14ee10d1d4e0cbc179199c754192270 (patch) | |
| tree | cfa409dff5d2ffc8ab53e2260242847a376668f5 /gcc/config | |
| parent | 9cee8116904615365b56ebb8670cc7a6479595c4 (diff) | |
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i386.md (extendsfdf2, [...]): Emit constants provided by 80387 instructions in the destination mode.
2006-01-26 Paolo Bonzini <bonzini@gnu.org>
* config/i386/i386.md (extendsfdf2, extendsfxf2, extenddfxf2): Emit
constants provided by 80387 instructions in the destination mode.
From-SVN: r110264
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/i386/i386.md | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 0b1d153..39d542d 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -3521,7 +3521,17 @@ /* ??? Needed for compress_float_constant since all fp constants are LEGITIMATE_CONSTANT_P. */ if (GET_CODE (operands[1]) == CONST_DOUBLE) - operands[1] = validize_mem (force_const_mem (SFmode, operands[1])); + { + if ((!TARGET_SSE2 || TARGET_MIX_SSE_I387) + && standard_80387_constant_p (operands[1]) > 0) + { + operands[1] = simplify_const_unary_operation + (FLOAT_EXTEND, DFmode, operands[1], SFmode); + emit_move_insn_1 (operands[0], operands[1]); + DONE; + } + operands[1] = validize_mem (force_const_mem (SFmode, operands[1])); + } if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) == MEM) operands[1] = force_reg (SFmode, operands[1]); }) @@ -3594,7 +3604,16 @@ /* ??? Needed for compress_float_constant since all fp constants are LEGITIMATE_CONSTANT_P. */ if (GET_CODE (operands[1]) == CONST_DOUBLE) - operands[1] = validize_mem (force_const_mem (SFmode, operands[1])); + { + if (standard_80387_constant_p (operands[1]) > 0) + { + operands[1] = simplify_const_unary_operation + (FLOAT_EXTEND, XFmode, operands[1], SFmode); + emit_move_insn_1 (operands[0], operands[1]); + DONE; + } + operands[1] = validize_mem (force_const_mem (SFmode, operands[1])); + } if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) == MEM) operands[1] = force_reg (SFmode, operands[1]); }) @@ -3633,7 +3652,16 @@ /* ??? Needed for compress_float_constant since all fp constants are LEGITIMATE_CONSTANT_P. */ if (GET_CODE (operands[1]) == CONST_DOUBLE) - operands[1] = validize_mem (force_const_mem (DFmode, operands[1])); + { + if (standard_80387_constant_p (operands[1]) > 0) + { + operands[1] = simplify_const_unary_operation + (FLOAT_EXTEND, XFmode, operands[1], DFmode); + emit_move_insn_1 (operands[0], operands[1]); + DONE; + } + operands[1] = validize_mem (force_const_mem (DFmode, operands[1])); + } if (GET_CODE (operands[0]) == MEM && GET_CODE (operands[1]) == MEM) operands[1] = force_reg (DFmode, operands[1]); }) |