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(extendsidi2): Correctly do operation when in FP 

registers and, since expensive, don't have FP regs as a preference.

From-SVN: r4624
This commit is contained in:
Richard Stallman 1993-06-01 22:53:54 +00:00
parent f929db3a12
commit 800713ef8f
1 changed files with 5 additions and 4 deletions
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9
gcc/config/alpha/alpha.md
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@ -73,15 +73,16 @@
;; Note that we can do sign extensions in both FP and integer registers.
;; However, the result must be in the same type of register as the input.
;; The register preferencing code can't handle this case very well, so, for
;; now, don't let the FP case show up here for preferencing.
;; now, don't let the FP case show up here for preferencing. Also,
;; sign-extends in FP registers take two instructions.
(define_insn "extendsidi2"
[(set (match_operand:DI 0 "register_operand" "=r,r,f")
(sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "r,m,f")))]
[(set (match_operand:DI 0 "register_operand" "=r,r,*f")
(sign_extend:DI (match_operand:SI 1 "nonimmediate_operand" "r,m,*f")))]
""
"@
addl %1,$31,%0
ldl %0,%1
cvtlq %1,%0"
cvtql %1,%0\;cvtlq %0,%0"
[(set_attr "type" "iaddlog,ld,fpop")])
(define_insn "addsi3"