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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_x86_specific.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_x86_specific.erl')
| -rw-r--r-- | lib/hipe/regalloc/hipe_x86_specific.erl | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/hipe/regalloc/hipe_x86_specific.erl b/lib/hipe/regalloc/hipe_x86_specific.erl index f1007c95ed..2720af92c1 100644 --- a/lib/hipe/regalloc/hipe_x86_specific.erl +++ b/lib/hipe/regalloc/hipe_x86_specific.erl @@ -47,6 +47,7 @@ liveout/2, uses/1, defines/1, + defines_all_alloc/1, def_use/1, is_arg/1, % used by hipe_ls_regalloc is_move/1, @@ -176,6 +177,8 @@ defines(I) -> hipe_x86:temp_is_allocatable(X), hipe_x86:temp_type(X) =/= 'double']. +defines_all_alloc(I) -> ?HIPE_X86_DEFUSE:insn_defs_all(I). + is_move(Instruction) -> case hipe_x86:is_move(Instruction) of true -> |