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When encountering a LoadStackPointer input to a comparison, generate a register LocationOperand that points to the stack pointer. This can avoid unnecessary spilling of the stack pointer. Since sp is a special register for arm64, we need to add a mechanism to print its name in RegisterConfiguration. This is a port of https://chromium-review.googlesource.com/1055568 that made the same change for arm. It also ports the tests added in https://chromium-review.googlesource.com/1099068 to arm and arm64. Bug: v8:7844 Change-Id: I5adc672ff877b9888ef755e8e60e4eabbc61061b Reviewed-on: https://chromium-review.googlesource.com/1107810 Reviewed-by: Sigurd Schneider <sigurds@chromium.org> Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com> Cr-Commit-Position: refs/heads/master@{#53889} |
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| instruction-selector-arm64-unittest.cc | ||