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qemu / qemu / e2f5ee36afb3b5306c99f40044534ae7d2580114
commite2f5ee36afb3b5306c99f40044534ae7d2580114[log] [tgz]
authorRichard Henderson <richard.henderson@linaro.org>Tue Jan 14 23:08:24 2025 -0800
committerRichard Henderson <richard.henderson@linaro.org>Mon Apr 28 13:40:17 2025 -0700
treebbed6a6e8bb0c06d934aee0422248c29b2404bf3
parentaeb3514bd06b278dd026c90e8f71ca5b32762ab9 [diff]
tcg/optimize: With two const operands, prefer 0 in arg1

For most binary operands, two const operands fold.
However, the add/sub carry opcodes have a third input.
Prefer "reg, zero, const" since many risc hosts have a
zero register that can fit a "reg, reg, const" insn format.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
1 file changed
tree: bbed6a6e8bb0c06d934aee0422248c29b2404bf3
  1. .github/
  2. .gitlab/
  3. .gitlab-ci.d/
  4. accel/
  5. audio/
  6. authz/
  7. backends/
  8. block/
  9. bsd-user/
  10. chardev/
  11. common-user/
  12. configs/
  13. contrib/
  14. crypto/
  15. disas/
  16. docs/
  17. dump/
  18. ebpf/
  19. fpu/
  20. fsdev/
  21. gdb-xml/
  22. gdbstub/
  23. host/
  24. hw/
  25. include/
  26. io/
  27. libdecnumber/
  28. linux-headers/
  29. linux-user/
  30. migration/
  31. monitor/
  32. nbd/
  33. net/
  34. pc-bios/
  35. plugins/
  36. po/
  37. python/
  38. qapi/
  39. qga/
  40. qobject/
  41. qom/
  42. replay/
  43. roms/
  44. rust/
  45. scripts/
  46. scsi/
  47. semihosting/
  48. stats/
  49. storage-daemon/
  50. stubs/
  51. subprojects/
  52. system/
  53. target/
  54. tcg/
  55. tests/
  56. tools/
  57. trace/
  58. ui/
  59. util/
  60. .b4-config
  61. .dir-locals.el
  62. .editorconfig
  63. .exrc
  64. .gdbinit
  65. .git-blame-ignore-revs
  66. .gitattributes
  67. .gitignore
  68. .gitlab-ci.yml
  69. .gitmodules
  70. .gitpublish
  71. .mailmap
  72. .patchew.yml
  73. .readthedocs.yml
  74. .travis.yml
  75. block.c
  76. blockdev-nbd.c
  77. blockdev.c
  78. blockjob.c
  79. configure
  80. COPYING
  81. COPYING.LIB
  82. cpu-common.c
  83. cpu-target.c
  84. event-loop-base.c
  85. gitdm.config
  86. hmp-commands-info.hx
  87. hmp-commands.hx
  88. iothread.c
  89. job-qmp.c
  90. job.c
  91. Kconfig
  92. Kconfig.host
  93. LICENSE
  94. MAINTAINERS
  95. Makefile
  96. meson.build
  97. meson_options.txt
  98. module-common.c
  99. os-posix.c
  100. os-win32.c
  101. page-target.c
  102. page-vary-common.c
  103. page-vary-target.c
  104. pythondeps.toml
  105. qemu-bridge-helper.c
  106. qemu-edid.c
  107. qemu-img-cmds.hx
  108. qemu-img.c
  109. qemu-io-cmds.c
  110. qemu-io.c
  111. qemu-keymap.c
  112. qemu-nbd.c
  113. qemu-options.hx
  114. qemu.nsi
  115. qemu.sasl
  116. README.rst
  117. replication.c
  118. target-info-stub.c
  119. target-info.c
  120. trace-events
  121. VERSION
  122. version.rc