[LLVMdev] llc with long-longs and hex floating point
lew.payne at gmail.com
Thu Oct 27 16:09:28 PDT 2011
In the following sequence:
$llc -march=c -o diag01_c.c diag01.ll
$vpolcc.ss -S -k diag01_c.c <<== **FAILS**
$vpolcc.ss -o diag01 diag01_c.s
I am using llc (from llvm) to convert an .ll file into a .c file. I am then
running the .c file through vpolcc.ss (from zephyr) to further process it
for mips architecture. The vpolcc.ss script fails at lcc (not to be
confused with llc), with the following error:
diag01_c.c:304: `75000ull' is a preprocessing number but an invalid integer
diag01_c.c:305: `0x1.9f4bc6p' is a preprocessing number but an invalid
diag01_c.c:306: `0x1.85d54c985f06fp' is a preprocessing number but an
invalid integer constant
Here's a snippet of the relevant section of diag01_c.c:
*(&llvm_cbe_l) = 75000ull;
*(&llvm_cbe_f) = 0x1.9f4bc6p+3;
*(&llvm_cbe_d) = -0x1.85d54c985f06fp+6;
Here's how vpolcc.ss is calling lcc:
($CFE is : ~/mips/lcc-run/lcc )
($cfeflag: I~/sim/sslittle-na-sstrix-include )
execute "$CFE $cfeflag -g -Wf-target=$TARGET -S -o $base.lef $base.i"
My questions are (the second one is relevant to llvm):
Can anyone tell me what I can do to get lcc to accept long-long values, as
well as C9X hex floating point constants and such?
If necessary, I'm willing to modify llc (CBackend.cpp) to generate values
that lcc can digest. However, I'm not sure how else I can represent the
values shown above.
Can someone give me an idea of where to start?
Boise State University
Compiler Research Team
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