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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/ppc/hipe_ppc_registers.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/ppc/hipe_ppc_registers.erl')
| -rw-r--r-- | lib/hipe/ppc/hipe_ppc_registers.erl | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/hipe/ppc/hipe_ppc_registers.erl b/lib/hipe/ppc/hipe_ppc_registers.erl index f4781d5ed7..8f6d9779fc 100644 --- a/lib/hipe/ppc/hipe_ppc_registers.erl +++ b/lib/hipe/ppc/hipe_ppc_registers.erl @@ -201,6 +201,8 @@ is_arg(R) -> _ -> false end. +%% Note: the fact that allocatable_gpr() is a subset of call_clobbered() is +%% hard-coded in hipe_ppc_defuse:insn_defs_all_gpr/1 call_clobbered() -> % does the RA strip the type or not? [{?R0,tagged},{?R0,untagged}, %% R1 is reserved for C |