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| author | buzbee <buzbee@google.com> | 2010-08-04 15:25:06 -0700 |
|---|---|---|
| committer | buzbee <buzbee@google.com> | 2010-08-04 15:59:55 -0700 |
| commit | bff121aa3e5d3c34caf837227cb00a46bf3f1966 (patch) | |
| tree | 749877c971544c3518c00428c76d2028d7ee2402 /vm/compiler/codegen/arm/ArchUtility.c | |
| parent | 4a41958266fb432629dea30832f4b3194667ba99 (diff) | |
| download | android_dalvik-bff121aa3e5d3c34caf837227cb00a46bf3f1966.tar.gz android_dalvik-bff121aa3e5d3c34caf837227cb00a46bf3f1966.tar.bz2 android_dalvik-bff121aa3e5d3c34caf837227cb00a46bf3f1966.zip | |
JIT: Reworked the assembler to be smarter about short instruction forms
Previously, the JIT wasn't generating short-form compare and branch on
zero/not zero instructions for Thumb2. The reason was that these only
allow a 1-byte displacement, and when they didn't reach the assembler would
abort the trace, split it in half and try again. This change re-enables
cbz, cbnz generation and introduces a relatively lightweight retry
mechanism.
Also includes changes for Thumb2 to always generate large displacement
literal loads and conditional branches to minimize the number of retry
attempts.
Change-Id: Icf066836fad203f5c0fcbbb2ae8e1aa73d1cf816
Diffstat (limited to 'vm/compiler/codegen/arm/ArchUtility.c')
0 files changed, 0 insertions, 0 deletions