Add an option to build vec tests for TBM.

Testing many AVL values results in traces that are too long for TBM.
Hence, use only one value.

Change-Id: Id16899129e982b991d9585f27ab342659ce76b4b

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9acd853..8b53b42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,7 @@
 cmake_minimum_required (VERSION 3.10)
 
 option(BUILD_SIMPLIFIED_CORE "Build the project with a simplified set of ISA support.")
+option(BUILD_FOR_TBM "When building the vector tests, use only a single AVL, to make the traces shorter.")
 set(CMAKE_C_ABI_COMPILED ON)
 set(CMAKE_CXX_ABI_COMPILED ON)
 
@@ -18,6 +19,10 @@
   add_definitions(-DLIBSPRINGBOK_NO_EXCEPTION_SUPPORT)
 endif()
 
+if(${BUILD_FOR_TBM})
+  add_compile_definitions(FOR_TBM)
+endif()
+
 enable_language(ASM)
 
 include($ENV{ROOTDIR}/sw/pigweed/pw_build/pigweed.cmake)

test_v_helpers/include/test_v_helpers.h

diff --git a/test_v_helpers/include/test_v_helpers.h b/test_v_helpers/include/test_v_helpers.h
index ba28e43..c725bf3 100644
--- a/test_v_helpers/include/test_v_helpers.h
+++ b/test_v_helpers/include/test_v_helpers.h
@@ -14,10 +14,15 @@
 const int VLEN = 512;
 const int MAXVL_BYTES = VLEN * LMUL_MAX;
 
+#ifdef FOR_TBM
+const int32_t AVLS[] = {17};
+#else
 const int32_t AVLS[] = {1,    4,    3,     2,     16,    8,    5,    17,
                         32,   36,   64,    55,    100,   321,  256,  128,
                         512,  623,  1024,  1100,  1543,  2048, 3052, 4096,
                         5555, 8192, 10241, 16384, 24325, 32768};
+#endif
+
 const int32_t AVL_COUNT = sizeof(AVLS) / sizeof(AVLS[0]);
 
 enum VSEW {