Add downgrade_arch_flags() to automatically replace/strip unsupported -march

and instruction set flags. Add testsuite.

1 files changed, 81 insertions, 0 deletions

diff --git a/eclass/tests/toolchain.sh b/eclass/tests/toolchain.sh
new file mode 100755
index 000000000000..7040707310a9
--- /dev/null
+++ b/eclass/tests/toolchain.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+
+source tests-common.sh
+
+inherit toolchain
+
+test_downgrade_arch_flags() {
+	local exp msg ret=0 ver
+
+	ver=${1}
+	exp=${2}
+	shift 2
+	CFLAGS=${@}
+
+	tbegin "${ver} ${CFLAGS} => ${exp}"
+
+	downgrade_arch_flags ${ver}
+	
+	if [[ ${CFLAGS} != ${exp} ]]; then
+		msg="Failure - Expected: \"${exp}\" Got: \"${CFLAGS}\""
+		ret=1
+	fi
+	tend ${ret} ${msg}
+}
+
+#                         ver  expected            given
+test_downgrade_arch_flags 4.9 "-march=haswell"    "-march=haswell"
+test_downgrade_arch_flags 4.8 "-march=core-avx2"  "-march=haswell"
+test_downgrade_arch_flags 4.7 "-march=core-avx2"  "-march=haswell"
+test_downgrade_arch_flags 4.6 "-march=core-avx-i" "-march=haswell"
+test_downgrade_arch_flags 4.5 "-march=core2"      "-march=haswell"
+test_downgrade_arch_flags 4.4 "-march=core2"      "-march=haswell"
+test_downgrade_arch_flags 4.3 "-march=core2"      "-march=haswell"
+test_downgrade_arch_flags 4.2 "-march=nocona"     "-march=haswell"
+test_downgrade_arch_flags 4.1 "-march=nocona"     "-march=haswell"
+test_downgrade_arch_flags 4.0 "-march=nocona"     "-march=haswell"
+test_downgrade_arch_flags 3.4 "-march=nocona"     "-march=haswell"
+test_downgrade_arch_flags 3.3 "-march=nocona"     "-march=haswell"
+
+test_downgrade_arch_flags 4.9 "-march=bdver4"     "-march=bdver4"
+test_downgrade_arch_flags 4.8 "-march=bdver3"     "-march=bdver4"
+test_downgrade_arch_flags 4.7 "-march=bdver2"     "-march=bdver4"
+test_downgrade_arch_flags 4.6 "-march=bdver1"     "-march=bdver4"
+test_downgrade_arch_flags 4.5 "-march=amdfam10"   "-march=bdver4"
+test_downgrade_arch_flags 4.4 "-march=amdfam10"   "-march=bdver4"
+test_downgrade_arch_flags 4.3 "-march=amdfam10"   "-march=bdver4"
+test_downgrade_arch_flags 4.2 "-march=k8"         "-march=bdver4"
+test_downgrade_arch_flags 4.1 "-march=k8"         "-march=bdver4"
+test_downgrade_arch_flags 4.0 "-march=k8"         "-march=bdver4"
+test_downgrade_arch_flags 3.4 "-march=k8"         "-march=bdver4"
+test_downgrade_arch_flags 3.3 "-march=x86-64"     "-march=bdver4"
+
+test_downgrade_arch_flags 3.4 "-march=c3-2"       "-march=c3-2"
+test_downgrade_arch_flags 3.3 "-march=c3"         "-march=c3-2"
+
+test_downgrade_arch_flags 4.5 "-march=garbage"    "-march=garbage"
+
+test_downgrade_arch_flags 4.9 "-mtune=intel"      "-mtune=intel"
+test_downgrade_arch_flags 4.8 "-mtune=generic"    "-mtune=intel"
+test_downgrade_arch_flags 3.4 ""                  "-mtune=generic"
+test_downgrade_arch_flags 3.4 ""                  "-mtune=x86-64"
+test_downgrade_arch_flags 3.3 "-mtune=nocona"     "-mtune=haswell"
+
+test_downgrade_arch_flags 4.5 "-march=amdfam10 -mtune=generic" "-march=btver2 -mtune=generic"
+test_downgrade_arch_flags 3.3 "-march=k6-2"       "-march=geode -mtune=barcelona"
+test_downgrade_arch_flags 3.4 "-march=k8"         "-march=btver2 -mtune=generic"
+
+test_downgrade_arch_flags 4.2 "-march=native"     "-march=native"
+test_downgrade_arch_flags 4.1 "-march=nocona"     "-march=native"
+
+test_downgrade_arch_flags 4.9 "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.8 "-march=foo -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.7 "-march=foo -mavx2 -mbmi -mno-xop -maes -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.6 "-march=foo -mbmi -mno-xop -maes -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.5 "-march=foo -mno-xop -maes -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.4 "-march=foo -maes -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.3 "-march=foo -mno-sse4" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+test_downgrade_arch_flags 4.2 "-march=foo" "-march=foo -msha -mrtm -mavx2 -mbmi -mno-xop -maes -mno-sse4"
+
+test_downgrade_arch_flags 4.4 "-O2 -march=core2 -ffoo -fblah" "-O2 -march=atom -msha -ffoo -mrtm -mavx2 -fblah"
+texit