Subzero: Align the stack at the point of function calls.

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"
 ATTRIBUTES="sse2 sse4.1"
 OUTDIR=Output
@@ skipping 36 matching lines @@
         ./crosstest.py -O${optlevel} --mattr ${attribute} \
             --prefix=Subzero_ \
             --target=x8632 \
             --dir="${OUTDIR}" \
             --llvm-bin-path="${LLVM_BIN_PATH}" \
             --test=test_bitmanip.cpp --test=test_bitmanip_intrin.ll \
             --driver=test_bitmanip_main.cpp \
             --output=test_bitmanip_O${optlevel}_${attribute}
 
         ./crosstest.py -O${optlevel} --mattr ${attribute} \
+            --prefix=Subzero_ --target=x8632 \
+            --dir="${OUTDIR}" \
+            --llvm-bin-path="${LLVM_BIN_PATH}" \
+            --test=test_calling_conv.cpp \
+            --driver=test_calling_conv_main.cpp \
+            --output=test_calling_conv_O${optlevel}_${attribute}
+
+        ./crosstest.py -O${optlevel} --mattr ${attribute} \
             --prefix=Subzero_ \
             --target=x8632 \
             --dir="${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}_${attribute}
 
         ./crosstest.py -O${optlevel} --mattr ${attribute} \
             --prefix=Subzero_ \
@@ skipping 63 matching lines @@
 
     done
 done
 
 for optlevel in ${OPTLEVELS} ; do
     for attribute in ${ATTRIBUTES}; do
         "${OUTDIR}"/simple_loop_O${optlevel}_${attribute}
         "${OUTDIR}"/mem_intrin_O${optlevel}_${attribute}
         "${OUTDIR}"/test_arith_O${optlevel}_${attribute}
         "${OUTDIR}"/test_bitmanip_O${optlevel}_${attribute}
+        "${OUTDIR}"/test_calling_conv_O${optlevel}_${attribute}
         "${OUTDIR}"/test_cast_O${optlevel}_${attribute}
         "${OUTDIR}"/test_fcmp_O${optlevel}_${attribute}
         "${OUTDIR}"/test_global_O${optlevel}_${attribute}
         "${OUTDIR}"/test_icmp_O${optlevel}_${attribute}
         "${OUTDIR}"/test_select_O${optlevel}_${attribute}
         "${OUTDIR}"/test_stacksave_O${optlevel}_${attribute}
         "${OUTDIR}"/test_sync_atomic_O${optlevel}_${attribute}
         "${OUTDIR}"/test_vector_ops_O${optlevel}_${attribute}
     done
 done