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- Log ----------------------------------------------------------------- commit 6635ef21befd5126c23140d4be12db874577e24c Author: Raymond Toy toy.raymond@gmail.com Date: Tue Aug 5 08:42:36 2014 -0700
Simplify SSE2-FLOATING-POINT-MODES vop by removing an unneeded temp. The setter is also simplified slightly by possibly removing an unnecessary move.
diff --git a/src/compiler/x86/float-sse2.lisp b/src/compiler/x86/float-sse2.lisp index e7b1b86..76bcc31 100644 --- a/src/compiler/x86/float-sse2.lisp +++ b/src/compiler/x86/float-sse2.lisp @@ -1331,17 +1331,15 @@ ;; Returns exactly the mxcsr register, except the masks are flipped ;; because we want exception enable flags, not masks. (define-vop (sse2-floating-point-modes) - (:results (res :scs (unsigned-reg))) + (:results (result :scs (unsigned-reg))) (:result-types unsigned-num) (:translate sse2-floating-point-modes) (:policy :fast-safe) - (:temporary (:sc unsigned-stack) cw-stack) - (:temporary (:sc unsigned-reg) temp) - (:generator 8 - (inst stmxcsr cw-stack) - (inst mov temp cw-stack) - (inst xor temp (ash #x3f 7)) - (inst mov res temp))) + (:temporary (:sc unsigned-stack) temp) + (:generator 3 + (inst stmxcsr temp) + (inst mov result temp) + (inst xor result (ash #x3f 7))))
;; Set mxcsr exactly to whatever is given, except we invert the ;; exception enable flags to make them match the exception mask flags. @@ -1362,7 +1360,7 @@ (inst xor temp (ash #x3f 7)) ; Convert enables to masks (inst mov cw-stack temp) (inst ldmxcsr cw-stack) - (inst mov res new))) + (move res new)))
;; For the record here is the format of the x87 control and status ;; words:
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Summary of changes: src/compiler/x86/float-sse2.lisp | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-)
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