similar to: SAS ODBC & R

In the section about poison values, the LLVM language reference manual says: "Values other than phi nodes depend on their operands." This implies that a select instruction's output can be poisoned by its not-selected argument value. If select were poisoned only by its selected argument, we would expect this fact to be mentioned specifically, as it is for phi. Next I'll

On Tue, Apr 17, 2012 at 12:23 AM, Jakob Stoklund Olesen <stoklund at 2pi.dk>wrote: > I am not sure how best to fix this. If possible, InstCombine's > canonicalization shouldn't hide arithmetic progressions behind bit masks. The entire concept of cleverly converting arithmetic to bit masks seems like the perfect domain for DAGCombine instead of InstCombine: 1) We know the

Look at this silly function: $ cat small.c unsigned f(unsigned a, unsigned *p) { unsigned x = a/4; p[0] = x; p[1] = x+x; return p[1] - 2*p[0]; } GCC turns this into straightforward code and figures out the 0 return value: shrl $2, %edi movl %edi, (%rsi) addl %edi, %edi movl %edi, 4(%rsi) movl $0, %eax ret LLVM optimizes the code: $ clang -O -S -o- small.c -emit-llvm define i32

I made other tests. It's not a matter of Win98 versus WinXP, things change passing from tftpd32 v310beta to v3.33. This version seems to work fine, but the logs show problems. Here is the complete log with pxelinux 3.82-pre4: Rcvd DHCP Discover Msg for IP 0.0.0.0, Mac 00:1E: 68:A6:9E:A9 [05/06 18:24:43.816] DHCP: proposed address 192.168.1.20 [05/06 18:24:43.816] 1356 Request 2 not

Hello everyone, please I need your help. To reproduce my problem I created simple pass for backends (TestPass.cpp in attached files). That pass I call from Mips backend in this way (MipsTargetMachine.cpp): bool MipsPassConfig::addPreRegAlloc() { addPass(createTestPass()); return false; } The problem becomes, when I am trying compile file ldtoa.ll (in attached files). Compiling