GH-117512: Allow 64-bit JIT operands on 32-bit platforms #117527
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brandtbucher
added
type-bug
Fidget-Spinner
approved these changes
Apr 4, 2024
markshannon
reviewed
Apr 4, 2024
| patches[HoleValue_OPERAND] = instruction->operand; | ||
| #else | ||
| assert(SIZEOF_VOID_P == 4); | ||
| patches[HoleValue_OPERAND_HI] = instruction->operand >> 32; |
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Should patches become uintptr_t instead of uint64_t? (on all platforms).
Given many of the casts are of the form (uint64_t)some_pointer, changing them to (uintptr_t)some_pointer avoids unnecessary widening on 32 bit platforms.
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We can't burn in anything wider than a pointer, so split 64-bit operands in half on 32-bit platforms and burn them in separately. This doesn't pessimize loads of operands less than the width of a pointer on any platform.
Unblocks GH-117396.