[LLVMdev] .ll test cases for tail call optimization in test-suite

[Arnold Schwaighofer]

In order to test the tail call optimization i created quite a few .ll
files and added them to the SingleSource directory in the test-suite.
For example llvm-test/SingleSource/Tailcall/tailcall1-2.ll.

Since i don't want opt to inline the tailcalls away :) i changed the rules
in the Makefile situated in the TailCall directory.

I want to compare the output of a file compile with normal llc with a
file compiled with llc -tailcallopt.

So my SingleSource/TailCall/Makefile looks like the following:
----
LEVEL = ../..
include $(LEVEL)/Makefile.config

#DISABLE_FOR_LLVM_PROGRAMS := 1
PROGRAM_REQUIRED_TO_EXIT_OK := 1

#REQUIRES_EH_SUPPORT := 1

PROGRAMS_TO_TEST := 
$(patsubst $(SourceDir)/%,%,$(basename $(wildcard $(SourceDir)/*.ll)))

include $(LEVEL)/Makefile.programs

.PRECIOUS: Output/%.linked.rll


Output/%.linked.rbc: Output/%.bc
        -cp -f $< $@


# since there is no native use llc output
Output/%.native: Output/%.bc Output/.dir
        -$(LLC) < $< | $(CC) -x assembler - -o $@ 

#
# Compile a linked program to machine code with LLC.
# use the unoptimized file %.bc not %.llvm.bc
#
$(PROGRAMS_TO_TEST:%=Output/%.llc.s): \
Output/%.llc.s: Output/%.bc $(LLC)
        -$(LLC) $(LLCFLAGS) -f $< -o $@

$(PROGRAMS_TO_TEST:%=Output/%.llc-beta.s): \
Output/%.llc-beta.s: Output/%.bc $(LLC)
        -$(LLC) $(LLCFLAGS) -f $(LLCBETAOPTION) $< -o $@

----

But that causes many of the following warnings when executiong make.

Makefile:43: warning: overriding commands for target
`Output/tailcall-struct-by-val.out-jit-beta'

Is there a better way of doing what i want? Also should i really add
those .ll test cases to the test-suite?

regards arnold (obviously not a makefile guru)