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| author | Magnus Lång <[email protected]> | 2016-05-28 20:22:34 +0200 |
|---|---|---|
| committer | Magnus Lång <[email protected]> | 2016-09-02 15:04:45 +0200 |
| commit | 85bd166647e7f260fd665eb44da9151c0d88f208 (patch) | |
| tree | 84878ab624fcc22246bae89b75a6857415508539 /lib/hipe/regalloc/hipe_regalloc_loop.erl | |
| parent | c2f8b61ca3682281752fa0984699214dfcbf7ccd (diff) | |
| download | otp-85bd166647e7f260fd665eb44da9151c0d88f208.tar.gz otp-85bd166647e7f260fd665eb44da9151c0d88f208.tar.bz2 otp-85bd166647e7f260fd665eb44da9151c0d88f208.zip | |
hipe: Add hipe_regalloc_prepass
hipe_regalloc_prepass speeds up register allocation by spilling any temp
that is live over a call (which clobbers all register).
In order to detect these, a new function was added to the target
interface; defines_all_alloc/1, that takes an instruction and returns a
boolean.
Diffstat (limited to 'lib/hipe/regalloc/hipe_regalloc_loop.erl')
| -rw-r--r-- | lib/hipe/regalloc/hipe_regalloc_loop.erl | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/hipe/regalloc/hipe_regalloc_loop.erl b/lib/hipe/regalloc/hipe_regalloc_loop.erl index fa42cdd0fb..33a7130ff1 100644 --- a/lib/hipe/regalloc/hipe_regalloc_loop.erl +++ b/lib/hipe/regalloc/hipe_regalloc_loop.erl @@ -43,7 +43,8 @@ ra_common(Defun, SpillIndex, Options, RegAllocMod, TargetMod) -> alloc(Defun, CFG, SpillLimit, SpillIndex, Options, RegAllocMod, TargetMod) -> ?inc_counter(ra_iteration_counter, 1), {Coloring, _NewSpillIndex, Liveness} = - RegAllocMod:regalloc(CFG, SpillIndex, SpillLimit,TargetMod, Options), + hipe_regalloc_prepass:regalloc( + RegAllocMod, CFG, SpillIndex, SpillLimit, TargetMod, Options), {NewDefun, DidSpill} = TargetMod:check_and_rewrite(Defun, Coloring), case DidSpill of false -> %% No new temps, we are done. |