aboutsummaryrefslogtreecommitdiffstats
path: root/lib/hipe/regalloc/hipe_ppc_specific.erl
diff options
context:
space:
mode:
authorMagnus Lång <[email protected]>2016-05-28 20:22:34 +0200
committerMagnus Lång <[email protected]>2016-09-02 15:04:45 +0200
commit85bd166647e7f260fd665eb44da9151c0d88f208 (patch)
tree84878ab624fcc22246bae89b75a6857415508539 /lib/hipe/regalloc/hipe_ppc_specific.erl
parentc2f8b61ca3682281752fa0984699214dfcbf7ccd (diff)
downloadotp-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_ppc_specific.erl')
-rw-r--r--lib/hipe/regalloc/hipe_ppc_specific.erl4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/hipe/regalloc/hipe_ppc_specific.erl b/lib/hipe/regalloc/hipe_ppc_specific.erl
index 988501c96f..79ca333865 100644
--- a/lib/hipe/regalloc/hipe_ppc_specific.erl
+++ b/lib/hipe/regalloc/hipe_ppc_specific.erl
@@ -40,6 +40,7 @@
,livein/2
,uses/1
,defines/1
+ ,defines_all_alloc/1
]).
%% for hipe_graph_coloring_regalloc:
@@ -129,6 +130,9 @@ defines(I) ->
[X || X <- hipe_ppc_defuse:insn_def_gpr(I),
hipe_ppc:temp_is_allocatable(X)].
+defines_all_alloc(I) ->
+ hipe_ppc_defuse:insn_defs_all_gpr(I).
+
is_move(Instruction) ->
case hipe_ppc:is_pseudo_move(Instruction) of
true ->