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Add setting VM_PARALLEL_BUILDS=1 when using --output-split, #2185.

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Wilson Snyder 2020-03-08 09:03:29 -04:00
parent 9392eac6a7
commit 8ccc17f30b
4 changed files with 8 additions and 3 deletions
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2
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@ -5,6 +5,8 @@ The contributors that suggested a given feature are shown in []. Thanks!
* Verilator 4.031 devel
*** Add setting VM_PARALLEL_BUILDS=1 when using --output-split, #2185.
* Verilator 4.030 2020-03-08

4
bin/verilator
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@ -1083,8 +1083,8 @@ and the remaining files can be compiled on parallel machines. Using
design --output-split 20000 resulted in splitting into approximately
one-minute-compile chunks.
Typically when using this, make with VM_PARALLEL_BUILDS=1, and use
I<ccache>.
Typically when using this, make with VM_PARALLEL_BUILDS=1 (set for you if
using the default makefiles), and use I<ccache>.
=item --output-split-cfuncs I<statements>

3
src/V3EmitMk.cpp
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@ -51,6 +51,9 @@ public:
of.puts("\n### Switches...\n");
of.puts("# Coverage output mode? 0/1 (from --coverage)\n");
of.puts("VM_COVERAGE = "); of.puts(v3Global.opt.coverage()?"1":"0"); of.puts("\n");
of.puts("# Parallel builds? 0/1 (from --output-split)\n");
of.puts("VM_PARALLEL_BUILDS = ");
of.puts(v3Global.opt.outputSplit() ? "1" : "0"); of.puts("\n");
of.puts("# Threaded output mode? 0/1/N threads (from --threads)\n");
of.puts("VM_THREADS = "); of.puts(cvtToStr(v3Global.opt.threads())); of.puts("\n");
of.puts("# Tracing output mode? 0/1 (from --trace)\n");

2
test_regress/t/t_flag_csplit.pl
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@ -31,7 +31,7 @@ while (1) {
"-C ".$Self->{obj_dir},
"-f $Self->{VM_PREFIX}.mk",
"-j 4",
"VM_PARALLEL_BUILDS=1", # Important to this test
#"VM_PARALLEL_BUILDS=1", # Check is set by makefile
"VM_PREFIX=$Self->{VM_PREFIX}",
"TEST_OBJ_DIR=$Self->{obj_dir}",
"CPPFLAGS_DRIVER=-D".uc($Self->{name}),