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gallivm: orcjit: support GALLIVM_DEBUG=dumpbc

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Add code that dumps the LLVM bytecode before passing it to LLJIT.

Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39149>
This commit is contained in:
Icenowy Zheng 2026-01-04 18:15:43 +08:00 • committed by Marge Bot
parent cb7e1859d7
commit 0291aa3e71
1 changed files with 17 additions and 0 deletions
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17
src/gallium/auxiliary/gallivm/lp_bld_init_orc.cpp
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@ -647,6 +647,23 @@ gallivm_compile_module(struct gallivm_state *gallivm)
lp_build_coro_add_malloc_hooks(gallivm);
/* Dump bitcode to a file */
if (gallivm_debug & GALLIVM_DEBUG_DUMP_BC &&
!(gallivm->cache && gallivm->cache->data_size)) {
char filename[256];
assert(gallivm->module_name);
snprintf(filename, sizeof(filename), "ir_%s.bc", gallivm->module_name);
LLVMWriteBitcodeToFile(gallivm->module, filename);
debug_printf("%s written\n", filename);
debug_printf("Invoke as \"opt -passes=%s %s | llc -O%d %s%s\"\n",
gallivm_perf & GALLIVM_PERF_NO_OPT ? "mem2reg" :
"sroa,early-cse,simplifycfg,reassociate,"
"mem2reg,instsimplify,instcombine",
filename, gallivm_perf & GALLIVM_PERF_NO_OPT ? 0 : 2,
"[-mcpu=<-mcpu option>] ",
"[-mattr=<-mattr option(s)>]");
}
LPJit::add_ir_module_to_jd(gallivm->_ts_context, gallivm->module,
gallivm->_per_module_jd);
/* ownership of module is now transferred into orc jit,