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| author | Bram Speeckaert <bram.speeckaert@gmail.com> | 2022-11-02 21:33:47 +0100 |
|---|---|---|
| committer | Bram Speeckaert <bram.speeckaert@gmail.com> | 2022-11-02 21:53:19 +0100 |
| commit | 7073a135c659d59f1874b69250d54f34cfb33da2 (patch) | |
| tree | 2f596a691f29e6f6c6ba4a6929c55cf78919ba45 /Source/Core/VideoCommon/OpcodeDecoding.cpp | |
| parent | 1c87f040a3b0771f9b5d231eb5dee620d15b7ed6 (diff) | |
JitArm64: MultiplyImmediate - Handle -(2^n)
ARM64's flexible shifting of input registers also allows us to calculate
a negative power of two in one instruction; shift the input of a NEG
instruction.
Before:
0x128001f7 mov w23, #-0x10
0x1b1a7efa mul w26, w23, w26
0x93407f58 sxtw x24, w26
After:
0x4b1a13fa neg w26, w26, lsl #4
0x93407f58 sxtw x24, w26
Diffstat (limited to 'Source/Core/VideoCommon/OpcodeDecoding.cpp')
0 files changed, 0 insertions, 0 deletions