Raymond Toy pushed to branch issue-166-integer-decode-float-min-float at cmucl / cmucl
Commits:
f1393af8 by Raymond Toy at 2023-02-27T07:14:42-08:00
Ignore the condition arg; we don't use it.
Also remove the call to `describe` that was used for debugging.
- - - - -
1 changed file:
- src/bootfiles/21d/boot-2021-07-1.lisp
Changes:
=====================================
src/bootfiles/21d/boot-2021-07-1.lisp
=====================================
@@ -10,8 +10,7 @@
(ext:without-package-locks
(handler-bind
((error (lambda (c)
- ;;(declare (ignore c))
- (describe c)
+ (declare (ignore c))
(invoke-restart 'lisp::unintern-conflicting-symbols))))
(export '(DOUBLE-FLOAT-INT-EXPONENT
SINGLE-FLOAT-INT-EXPONENT))))
View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/-/commit/f1393af8f1c50e2fade81a6…
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Raymond Toy pushed to branch issue-168-no-negated-forms-for-jmp at cmucl / cmucl
Commits:
96310401 by Raymond Toy at 2023-02-26T16:19:45-08:00
Add some comments on what the different jmp conditions mean
I always forget the difference between, say, `:be` and `:le`. The
former is for unsigned comparisons and the later for signed.
So add some short comments on what the conditions really mean.
- - - - -
1 changed file:
- src/compiler/x86/insts.lisp
Changes:
=====================================
src/compiler/x86/insts.lisp
=====================================
@@ -259,21 +259,38 @@
;; the first one is the one that is preferred when printing the
;; condition code out.
(defconstant conditions
- '((:o . 0)
+ '(
+ ;; OF = 1
+ (:o . 0)
+ ;; OF = 0
(:no . 1)
+ ;; Unsigned <; CF = 1
(:b . 2) (:nae . 2) (:c . 2)
+ ;; Unsigned >=; CF = 0
(:ae . 3) (:nb . 3) (:nc . 3)
+ ;; Equal; ZF = 1
(:e . 4) (:eq . 4) (:z . 4)
+ ;; Not equal; ZF = 0
(:ne . 5) (:nz . 5)
+ ;; Unsigned <=; CF = 1 or ZF = 1
(:be . 6) (:na . 6)
+ ;; Unsigned >; CF = 1 and ZF = 0
(:a . 7) (:nbe . 7)
+ ;; SF = 1
(:s . 8)
+ ;; SF = 0
(:ns . 9)
+ ;; Parity even
(:p . 10) (:pe . 10)
+ ;; Parity odd
(:np . 11) (:po . 11)
+ ;; Signed <; SF /= OF
(:l . 12) (:nge . 12)
+ ;; Signed >=; SF = OF
(:ge . 13) (:nl . 13)
+ ;; Signed <=; ZF = 1 or SF /= OF
(:le . 14) (:ng . 14)
+ ;; Signed >; ZF =0 and SF = OF
(:g . 15) (:nle . 15)))
(defun conditional-opcode (condition)
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Raymond Toy pushed to branch issue-168-no-negated-forms-for-jmp at cmucl / cmucl
Commits:
4ec28e36 by Raymond Toy at 2023-02-25T18:47:06-08:00
Update CI to use the bootstrap file when building.
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b4b8f578 by Raymond Toy at 2023-02-25T18:48:35-08:00
Add comment on what this bootstrap file is supposed to do.
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2 changed files:
- .gitlab-ci.yml
- src/bootfiles/21d/boot-2021-07-2.lisp
Changes:
=====================================
.gitlab-ci.yml
=====================================
@@ -1,7 +1,7 @@
variables:
download_url: "https://common-lisp.net/project/cmucl/downloads/snapshots/2021/07"
version: "2021-07-x86"
- bootstrap: ""
+ bootstrap: "-B boot-2021-07-2"
stages:
- install
=====================================
src/bootfiles/21d/boot-2021-07-2.lisp
=====================================
@@ -1,3 +1,8 @@
+;; Bootstrap file for x86 to choose the non-negated forms of the
+;; condition flag for conditional jumps.
+;;
+;; Use bin/build.sh -B boot-2021-07-2 to build this.
+
(in-package :x86)
(ext:without-package-locks
View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/-/compare/6bd3fd00f67e5c4c2275f6…
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