diff options
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_init.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_init.c b/src/gallium/auxiliary/gallivm/lp_bld_init.c index ca36b467cad..a9968649c06 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_init.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_init.c @@ -144,7 +144,15 @@ create_pass_manager(struct gallivm_state *gallivm) LLVMAddScalarReplAggregatesPass(gallivm->passmgr); LLVMAddEarlyCSEPass(gallivm->passmgr); LLVMAddCFGSimplificationPass(gallivm->passmgr); - LLVMAddLICMPass(gallivm->passmgr); + /* + * FIXME: LICM is potentially quite useful. However, for some + * rather crazy shaders the compile time can reach _hours_ per shader, + * due to licm implying lcssa (since llvm 3.5), which can take forever. + * Even for sane shaders, the cost of licm is rather high (and not just + * due to lcssa, licm itself too), though mostly only in cases when it + * can actually move things, so having to disable it is a pity. + * LLVMAddLICMPass(gallivm->passmgr); + */ LLVMAddReassociatePass(gallivm->passmgr); LLVMAddPromoteMemoryToRegisterPass(gallivm->passmgr); LLVMAddConstantPropagationPass(gallivm->passmgr); |