Add Om1 lowering with no optimizations

crosstest/runtests.sh

+#!/bin/sh
+
+# TODO: Retire this script and move the individual tests into the lit
+# framework, to leverage parallel testing and other lit goodness.
+
+set -eux
+
+OPTLEVELS="m1"
+OUTDIR=Output
+# Clean the output directory to avoid reusing stale results.
+rm -rf "${OUTDIR}"
+mkdir -p "${OUTDIR}"
+
+for optlevel in ${OPTLEVELS} ; do
+
+    ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
+        --dir="${OUTDIR}" \
+        --llvm-bin-path="${LLVM_BIN_PATH}" \
+        --test=simple_loop.c \
+        --driver=simple_loop_main.c \
+        --output=simple_loop_O${optlevel}
+
+    ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
+        --dir="${OUTDIR}" \
+        --llvm-bin-path="${LLVM_BIN_PATH}" \
+        --test=test_cast.cpp --test=test_cast_to_u1.ll \
+        --driver=test_cast_main.cpp \
+        --output=test_cast_O${optlevel}
+
+    ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
+        --dir="${OUTDIR}" \
+        --llvm-bin-path="${LLVM_BIN_PATH}" \
+        --test=test_fcmp.pnacl.ll \
+        --driver=test_fcmp_main.cpp \
+        --output=test_fcmp_O${optlevel}
+
+    ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
+        --dir="${OUTDIR}" \
+        --llvm-bin-path="${LLVM_BIN_PATH}" \
+        --test=test_icmp.cpp \
+        --driver=test_icmp_main.cpp \
+        --output=test_icmp_O${optlevel}
+
+    ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
+        --dir="${OUTDIR}" \
+        --llvm-bin-path="${LLVM_BIN_PATH}" \
+        --test=test_arith.cpp --test=test_arith_frem.ll \
+        --driver=test_arith_main.cpp \
+        --output=test_arith_O${optlevel}
+
+done
+
+for optlevel in ${OPTLEVELS} ; do
+    "${OUTDIR}"/simple_loop_O${optlevel}
+    "${OUTDIR}"/test_cast_O${optlevel}
+    "${OUTDIR}"/test_fcmp_O${optlevel}
+    "${OUTDIR}"/test_icmp_O${optlevel}
+    "${OUTDIR}"/test_arith_O${optlevel}
+done