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| author | Micah Weston <micahsweston@gmail.com> | 2022-01-22 12:39:22 +0000 |
|---|---|---|
| committer | David Green <david.green@arm.com> | 2022-01-22 12:39:22 +0000 |
| commit | 93deac2e2ba96248c05441a0bfa8385a73d78acb (patch) | |
| tree | 9818127ed29e1c89e1c15910e642e4095c9e620d /lldb/source/Plugins/ScriptInterpreter/Python/ScriptedProcessPythonInterface.cpp | |
| parent | 4041354b4c12fb4329853b67f61b8617252188d6 (diff) | |
[AArch64] Optimize add/sub with immediate through MIPeepholeOpt
Fixes the build issue with D111034, whose goal was to optimize
add/sub with long immediates.
Optimize ([add|sub] r, imm) -> ([ADD|SUB] ([ADD|SUB] r, #imm0, lsl #12), #imm1),
if imm == (imm0<<12)+imm1. and both imm0 and imm1 are non-zero 12-bit unsigned
integers.
Optimize ([add|sub] r, imm) -> ([SUB|ADD] ([SUB|ADD] r, #imm0, lsl #12), #imm1),
if imm == -(imm0<<12)-imm1, and both imm0 and imm1 are non-zero 12-bit unsigned
integers.
The change which fixed the build issue in D111034 was the use of new virtual
registers so that SSA form is maintained until deleting MI.
Differential Revision: https://reviews.llvm.org/D117429
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/ScriptedProcessPythonInterface.cpp')
0 files changed, 0 insertions, 0 deletions