Bug 151012
| Summary: | MacroAssemblerX86_64 should expose the full power of LEA | ||
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| Product: | WebKit | Reporter: | Filip Pizlo <fpizlo> |
| Component: | JavaScriptCore | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | benjamin, kling |
| Priority: | P2 | ||
| Version: | WebKit Nightly Build | ||
| Hardware: | All | ||
| OS: | All | ||
| Bug Depends on: | |||
| Bug Blocks: | 154319 | ||
Filip Pizlo
It should be possible to do things like:
m_jit.leaPtr(MacroAssembler::BaseIndex(rax, rcx), rdx); // three-operand form of addPtr
m_jit.lea32(MacroAssembler::BaseIndex(rax, rcx), rdx); // three-operand form of add32
m_jit.add32(rax, rcx, rdx); // this uses lea32, or vice-versa. it's useful to have this alias
m_jit.leaPtr(MacroAssembler::BaseIndex(rax, rcx, ScaleEight, 42), rdx); // MEGA COMBO
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Benjamin Poulain
Andreas, can you help?