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qemu / qemu / 51127181cfac0315720e6ca502eb133a353f6b11
commit51127181cfac0315720e6ca502eb133a353f6b11[log] [tgz]
authorAurelien Jarno <aurelien@aurel32.net>Tue Oct 09 21:53:21 2012 +0200
committerAurelien Jarno <aurelien@aurel32.net>Wed Oct 31 22:20:48 2012 +0100
tree19573138089d6e5d3e95948b3bee16bfcb3a35a4
parentacf124655873cf7256877a35efd8dacca1b199d8 [diff]
target-mips: optimize ddiv/ddivu/div/divu with movcond

The result of a division by 0, or a division of INT_MIN by -1 in the
signed case, is unpredictable. Just replace 0 by 1 in that case so that
it doesn't trigger a floating point exception on the host.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
1 file changed
tree: 19573138089d6e5d3e95948b3bee16bfcb3a35a4
  1. audio/
  2. block/
  3. bsd-user/
  4. default-configs/
  5. docs/
  6. fpu/
  7. fsdev/
  8. gdb-xml/
  9. hw/
  10. include/
  11. libcacard/
  12. linux-headers/
  13. linux-user/
  14. net/
  15. pc-bios/
  16. qapi/
  17. qga/
  18. QMP/
  19. qom/
  20. roms/
  21. scripts/
  22. slirp/
  23. sysconfigs/
  24. target-alpha/
  25. target-arm/
  26. target-cris/
  27. target-i386/
  28. target-lm32/
  29. target-m68k/
  30. target-microblaze/
  31. target-mips/
  32. target-openrisc/
  33. target-ppc/
  34. target-s390x/
  35. target-sh4/
  36. target-sparc/
  37. target-unicore32/
  38. target-xtensa/
  39. tcg/
  40. tests/
  41. trace/
  42. ui/
  43. .exrc
  44. .gitignore
  45. .gitmodules
  46. .mailmap
  47. a.out.h
  48. acl.c
  49. acl.h
  50. aes.c
  51. aes.h
  52. aio.c
  53. alpha-dis.c
  54. alpha.ld
  55. arch_init.c
  56. arch_init.h
  57. arm-dis.c
  58. arm.ld
  59. async.c
  60. balloon.c
  61. balloon.h
  62. bitmap.c
  63. bitmap.h
  64. bitops.c
  65. bitops.h
  66. block-migration.c
  67. block-migration.h
  68. block.c
  69. block.h
  70. block_int.h
  71. blockdev-nbd.c
  72. blockdev.c
  73. blockdev.h
  74. blockjob.c
  75. blockjob.h
  76. bswap.h
  77. bt-host.c
  78. bt-host.h
  79. bt-vhci.c
  80. buffered_file.c
  81. buffered_file.h
  82. cache-utils.c
  83. cache-utils.h
  84. Changelog
  85. cmd.c
  86. cmd.h
  87. CODING_STYLE
  88. compatfd.c
  89. compatfd.h
  90. compiler.h
  91. config.h
  92. configure
  93. console.c
  94. console.h
  95. COPYING
  96. COPYING.LIB
  97. coroutine-gthread.c
  98. coroutine-sigaltstack.c
  99. coroutine-ucontext.c
  100. coroutine-win32.c
  101. cpu-all.h
  102. cpu-common.h
  103. cpu-defs.h
  104. cpu-exec.c
  105. cpus.c
  106. cpus.h
  107. cputlb.c
  108. cputlb.h
  109. cris-dis.c
  110. cursor.c
  111. cursor_hidden.xpm
  112. cursor_left_ptr.xpm
  113. cutils.c
  114. def-helper.h
  115. device_tree.c
  116. device_tree.h
  117. dis-asm.h
  118. disas.c
  119. disas.h
  120. dma-helpers.c
  121. dma.h
  122. dump-stub.c
  123. dump.c
  124. dump.h
  125. elf.h
  126. envlist.c
  127. envlist.h
  128. error.c
  129. error.h
  130. event_notifier.c
  131. event_notifier.h
  132. exec-all.h
  133. exec-memory.h
  134. exec.c
  135. gdbstub.c
  136. gdbstub.h
  137. gen-icount.h
  138. HACKING
  139. hmp-commands.hx
  140. hmp.c
  141. hmp.h
  142. host-utils.c
  143. host-utils.h
  144. hppa-dis.c
  145. hppa.ld
  146. hwaddr.h
  147. i386-dis.c
  148. i386.ld
  149. ia64-dis.c
  150. ia64.ld
  151. input.c
  152. int128.h
  153. iohandler.c
  154. ioport.c
  155. ioport.h
  156. iorange.h
  157. iov.c
  158. iov.h
  159. json-lexer.c
  160. json-lexer.h
  161. json-parser.c
  162. json-parser.h
  163. json-streamer.c
  164. json-streamer.h
  165. kvm-all.c
  166. kvm-stub.c
  167. kvm.h
  168. libfdt_env.h
  169. LICENSE
  170. linux-aio.c
  171. lm32-dis.c
  172. m68k-dis.c
  173. m68k.ld
  174. main-loop.c
  175. main-loop.h
  176. MAINTAINERS
  177. Makefile
  178. Makefile.dis
  179. Makefile.objs
  180. Makefile.target
  181. Makefile.user
  182. memory-internal.h
  183. memory.c
  184. memory.h
  185. memory_mapping-stub.c
  186. memory_mapping.c
  187. memory_mapping.h
  188. microblaze-dis.c
  189. migration-exec.c
  190. migration-fd.c
  191. migration-tcp.c
  192. migration-unix.c
  193. migration.c
  194. migration.h
  195. mips-dis.c
  196. mips.ld
  197. module.c
  198. module.h
  199. monitor.c
  200. monitor.h
  201. nbd.c
  202. nbd.h
  203. net.c
  204. net.h
  205. notify.c
  206. notify.h
  207. os-posix.c
  208. os-win32.c
  209. osdep.c
  210. osdep.h
  211. oslib-posix.c
  212. oslib-win32.c
  213. page_cache.c
  214. path.c
  215. pci-ids.txt
  216. pflib.c
  217. pflib.h
  218. poison.h
  219. posix-aio-compat.c
  220. ppc-dis.c
  221. ppc.ld
  222. ppc64.ld
  223. qapi-schema-guest.json
  224. qapi-schema-test.json
  225. qapi-schema.json
  226. qbool.c
  227. qbool.h
  228. qdict-test-data.txt
  229. qdict.c
  230. qdict.h
  231. qemu-aio.h
  232. qemu-barrier.h
  233. qemu-bridge-helper.c
  234. qemu-char.c
  235. qemu-char.h
  236. qemu-common.h
  237. qemu-config.c
  238. qemu-config.h
  239. qemu-coroutine-int.h
  240. qemu-coroutine-io.c
  241. qemu-coroutine-lock.c
  242. qemu-coroutine-sleep.c
  243. qemu-coroutine.c
  244. qemu-coroutine.h
  245. qemu-doc.texi
  246. qemu-error.c
  247. qemu-error.h
  248. qemu-file.h
  249. qemu-ga.c
  250. qemu-img-cmds.hx
  251. qemu-img.c
  252. qemu-img.texi
  253. qemu-io.c
  254. qemu-lock.h
  255. qemu-log.c
  256. qemu-log.h
  257. qemu-nbd.c
  258. qemu-nbd.texi
  259. qemu-objects.h
  260. qemu-option-internal.h
  261. qemu-option.c
  262. qemu-option.h
  263. qemu-options-wrapper.h
  264. qemu-options.h
  265. qemu-options.hx
  266. qemu-os-posix.h
  267. qemu-os-win32.h
  268. qemu-progress.c
  269. qemu-queue.h
  270. qemu-seccomp.c
  271. qemu-seccomp.h
  272. qemu-sockets.c
  273. qemu-tech.texi
  274. qemu-thread-posix.c
  275. qemu-thread-posix.h
  276. qemu-thread-win32.c
  277. qemu-thread-win32.h
  278. qemu-thread.h
  279. qemu-timer-common.c
  280. qemu-timer.c
  281. qemu-timer.h
  282. qemu-tls.h
  283. qemu-tool.c
  284. qemu-user.c
  285. qemu-x509.h
  286. qemu-xattr.h
  287. qemu.sasl
  288. qemu_socket.h
  289. qerror.c
  290. qerror.h
  291. qfloat.c
  292. qfloat.h
  293. qint.c
  294. qint.h
  295. qjson.c
  296. qjson.h
  297. qlist.c
  298. qlist.h
  299. qmp-commands.hx
  300. qmp.c
  301. qobject.h
  302. qstring.c
  303. qstring.h
  304. qtest.c
  305. qtest.h
  306. range.h
  307. readline.c
  308. readline.h
  309. README
  310. rules.mak
  311. s390-dis.c
  312. s390.ld
  313. savevm.c
  314. sh4-dis.c
  315. softmmu-semi.h
  316. softmmu_defs.h
  317. softmmu_exec.h
  318. softmmu_header.h
  319. softmmu_template.h
  320. sparc-dis.c
  321. sparc.ld
  322. sparc64.ld
  323. spice-qemu-char.c
  324. sysemu.h
  325. tcg-runtime.c
  326. tci-dis.c
  327. tci.c
  328. thunk.c
  329. thunk.h
  330. TODO
  331. trace-events
  332. translate-all.c
  333. uboot_image.h
  334. uri.c
  335. uri.h
  336. user-exec.c
  337. VERSION
  338. version.rc
  339. vgafont.h
  340. vl.c
  341. vmstate.h
  342. x86_64.ld
  343. xen-all.c
  344. xen-mapcache.c
  345. xen-mapcache.h
  346. xen-stub.c