Lower the select instruction when the operands are of vector type.

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 2"
 OUTDIR=Output
 # Clean the output directory to avoid reusing stale results.
@@ skipping 56 matching lines @@
     ./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="${LLVM_BIN_PATH}" \
+        --test=test_select.ll \
+        --driver=test_select_main.cpp \
+        --output=test_select_O${optlevel}
+
+    ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
+        --dir="${OUTDIR}" \
+        --llvm-bin-path="${LLVM_BIN_PATH}" \
         --test=test_stacksave.c \
         --driver=test_stacksave_main.c \
         --output=test_stacksave_O${optlevel}
 
     # Compile the non-subzero object files straight from source
     # since the native LLVM backend does not understand how to
     # lower NaCl-specific intrinsics.
     ./crosstest.py -O${optlevel} --prefix=Subzero_ --target=x8632 \
        --dir="${OUTDIR}" \
        --llvm-bin-path="${LLVM_BIN_PATH}" \
@@ skipping 13 matching lines @@
 
 for optlevel in ${OPTLEVELS} ; do
     "${OUTDIR}"/simple_loop_O${optlevel}
     "${OUTDIR}"/mem_intrin_O${optlevel}
     "${OUTDIR}"/test_arith_O${optlevel}
     "${OUTDIR}"/test_bitmanip_O${optlevel}
     "${OUTDIR}"/test_cast_O${optlevel}
     "${OUTDIR}"/test_fcmp_O${optlevel}
     "${OUTDIR}"/test_global_O${optlevel}
     "${OUTDIR}"/test_icmp_O${optlevel}
+    "${OUTDIR}"/test_select_O${optlevel}
     "${OUTDIR}"/test_stacksave_O${optlevel}
     "${OUTDIR}"/test_sync_atomic_O${optlevel}
     "${OUTDIR}"/test_vector_ops_O${optlevel}
 done