From 3280aa8f8398b2b6a1bb78aedc27fc7e73653288 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Thu, 31 Aug 2017 12:29:25 +0200
Subject: ops.tab: Mark infrequently used instructions as %cold

Instructions that used to be implemented in beam_emu.c
were not marked as cold as it would make no difference.
---
 erts/emulator/beam/ops.tab      | 19 +++++++++++++++++++
 erts/emulator/hipe/hipe_ops.tab |  3 +++
 2 files changed, 22 insertions(+)

diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab
index d199c9e9f2..d848c1cceb 100644
--- a/erts/emulator/beam/ops.tab
+++ b/erts/emulator/beam/ops.tab
@@ -59,6 +59,7 @@ put_tuple u==0 d => too_old_compiler
 # All the other instructions.
 #
 
+%cold
 label L
 i_func_info I a a I
 int_code_end
@@ -68,6 +69,7 @@ i_debug_breakpoint
 i_return_time_trace
 i_return_to_trace
 i_yield
+%hot
 
 return
 
@@ -217,6 +219,11 @@ is_number Fail Literal=q => move Literal x | is_number Fail x
 
 jump f
 
+#
+# Expection rasing instructions. Infrequently executed.
+#
+
+%cold
 case_end NotInX=cy => move NotInX x | case_end x
 badmatch NotInX=cy => move NotInX x | badmatch x
 
@@ -238,6 +245,12 @@ i_raise
 badarg j
 system_limit j
 
+%hot
+
+#
+# Move instructions.
+#
+
 move C=cxy x==0 | jump Lbl => move_jump Lbl C
 
 move_jump f ncxy
@@ -404,8 +417,10 @@ wait_timeout_unlocked s f
 wait_timeout_locked_int I f
 wait_timeout_locked s f
 
+%cold
 i_wait_error
 i_wait_error_locked
+%hot
 
 send
 
@@ -515,6 +530,7 @@ put_list s s d
 # Some more only used by the emulator
 #
 
+%cold
 normal_exit
 continue_exit
 apply_bif
@@ -522,6 +538,7 @@ call_nif
 call_error_handler
 error_action_code
 return_trace
+%hot
 
 #
 # Instruction transformations & folded instructions.
@@ -939,9 +956,11 @@ i_apply_fun
 i_apply_fun_last P
 i_apply_fun_only
 
+%cold
 i_hibernate
 
 i_perf_counter
+%hot
 
 call_bif e
 
diff --git a/erts/emulator/hipe/hipe_ops.tab b/erts/emulator/hipe/hipe_ops.tab
index 96e4c0da91..19a3820a6a 100644
--- a/erts/emulator/hipe/hipe_ops.tab
+++ b/erts/emulator/hipe/hipe_ops.tab
@@ -23,4 +23,7 @@ hipe_trap_call_closure
 hipe_trap_return
 hipe_trap_throw
 hipe_trap_resume
+
+%cold
 hipe_call_count
+%hot
-- 
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