From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 7 Jun 2019 09:16:39 +0000 (+0200)
Subject: build/sim: use -O0 for verilator compilation
X-Git-Tag: 24jan2021_ls180~1179
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ecb60f6e43092e9816c0f2ab231a250c55927a7a;p=litex.git

build/sim: use -O0 for verilator compilation

In most of the case, execution speed is already fast enough with -O0 and
with complex design -O0 is a lost faster to compile than -O3. In the future
we could add a switch to choose which optimization we want.
---

diff --git a/litex/build/sim/core/Makefile b/litex/build/sim/core/Makefile
index 3737af82..149789d8 100644
--- a/litex/build/sim/core/Makefile
+++ b/litex/build/sim/core/Makefile
@@ -1,7 +1,7 @@
 include variables.mak
 
 CC = gcc
-CFLAGS = -Wall -O3 -ggdb $(if $(COVERAGE), -DVM_COVERAGE)
+CFLAGS = -Wall -O0 -ggdb $(if $(COVERAGE), -DVM_COVERAGE)
 LDFLAGS = -lpthread -ljson-c -lm -lstdc++ -ldl -levent
 
 CC_SRCS ?= "--cc dut.v"