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In coercions, try to reuse a register with the same token.

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This reduces code size.
This commit is contained in:
George Koehler 2017-12-17 12:45:27 -05:00
parent b0d75fed37
commit d8fa9d1b2a
1 changed files with 8 additions and 12 deletions
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20
mach/powerpc/ncg/table
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@ -723,11 +723,13 @@ COERCIONS
addi sp, sp, {C, 4} addi sp, sp, {C, 4}
yields %a yields %a
/* "uses REG=%1" may find and reuse a register containing the
* same token. For contrast, "uses REG gen move %1, %a" would
* pick a different register before doing the move.
*/
from INT_W from INT_W
uses REG uses REG=%1
gen
COMMENT("coerce INT_W->REG")
move %1, %a
yields %a yields %a
/* /*
@ -741,17 +743,11 @@ COERCIONS
*/ */
from FLOAT_D from FLOAT_D
uses FREG uses FREG=%1
gen
COMMENT("coerce FLOAT_D->FREG")
move %1, %a
yields %a yields %a
from FLOAT_W from FLOAT_W
uses FSREG uses FSREG=%1
gen
COMMENT("coerce FLOAT_W->FREG")
move %1, %a
yields %a yields %a