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...odbg_begin(0), re = MRI->use_nodbg_end(); ri != re; ++ri) { MachineInstr *UseMI = &*ri; UseMI->dump (); } } ***** But I see that UseMI is DBG_VALUE %noreg, 0, !"foobar"; line no:511 inlined @[ foo.cc:364:5 ] Also, when I want to check what "isDebugValue" returns, I get this. (gdb) p UseMI->isDebugValue() $1 = true Isn't this a bug ? There seems to be something wrong or am I missing something ? TIA, Pranav Qualcomm Innovation Center (QuIC) is a member of the Code Aurora Forum.

...mportant that this can be used for more than VLIW targets. Besides the uses you mention, I would like to use bundle DBG_VALUE instructions so we can avoid silly code like this: MachineBasicBlock::iterator InsertPos = mi; while (InsertPos != MBB->begin() && llvm::prior(InsertPos)->isDebugValue()) --InsertPos; MachineBasicBlock::iterator From = KillMI; MachineBasicBlock::iterator To = llvm::next(From); while (llvm::prior(From)->isDebugValue()) --From; I also think bundles can be used for implementing parallel copies. Value Semantics =============== The register allo...

I mean, we just skip over instructions without a DebugLoc: void CodeViewDebug::beginInstruction(const MachineInstr *MI) { DebugHandlerBase::beginInstruction(MI); // Ignore DBG_VALUE locations and function prologue. if (!Asm || !CurFn || MI->isDebugValue() || MI->getFlag(MachineInstr::FrameSetup)) return; DebugLoc DL = MI->getDebugLoc(); if (DL == PrevInstLoc || !DL) return; maybeRecordLocation(DL, Asm->MF); } Seems reasonable to extend the condition with ' || DL->getLine() == 0'. I'm not aware of a goo...

Hi Violeta, I compiled with clang -Oz and clang -Oz -mno-red-zone for comparisons against Oz and clang -O0 and clang -O0 -mno-red-zone for comparisons against a default clang. I unfortunately don’t have the clang commit I worked with on my home laptop, and don’t have access to the computer I was using at Apple, so I can’t help you there. Jessica > On Sep 28, 2016, at 11:22 AM, Violeta

I've been playing with Fred Riss's "line 0" patch for DWARF (https://reviews.llvm.org/D16569) but in adapting it for current trunk, I find the DwarfDebug stuff has been refactored to allow either DWARF or CodeView. That's all good, but the question is whether the "line 0" patch should be DWARF-specific or common. The DWARF spec explicitly states that code not

On Wed, Oct 31, 2012 at 09:13:43PM +0100, Bjorn De Sutter wrote: > Hi all, > > I am working on a CGRA backend (something like a 2D VLIW), and we also absolutely need predication. I extended the IfConversion pass to allow it to be executed multiple times and to predicate already predicated code. This is necessary to predicate code with nested conditional statements. At this point, we

Hi Quentin, On 08/19/14 18:58, Quentin Colombet wrote: [...] > It seems that you will have to debug further the *** Bad machine code: Instruction loads from dead spill slot *** before we can be of any help. Yes, I've done some more digging. Sorry for the long mail... I get: Inline spilling aN40_0_7:%vreg1954 [5000r,5056r:0)[5056r,5348r:1) 0 at 5000r 1 at 5056r At this point I have

Hi all, I am working on a CGRA backend (something like a 2D VLIW), and we also absolutely need predication. I extended the IfConversion pass to allow it to be executed multiple times and to predicate already predicated code. This is necessary to predicate code with nested conditional statements. At this point, we support or, and, and conditional predicates (see Scott Mahlke's papers on this

Machine Instruction Bundle in LLVM Hi all, There have been quite a bit of discussions about adding machine instruction bundle to support VLIW targets. I have been pondering what the right representation should be and what kind of impact it might have on the LLVM code generator. I believe I have a fairly good plan now and would like to share with the LLVM community. Design Criteria 1. The

...delete ResourceTracker; >> -} >> - >> -// ignorePseudoInstruction - ignore pseudo instructions. >> -bool VLIWPacketizerList::ignorePseudoInstruction(MachineInstr *MI, >> - MachineBasicBlock *MBB) { >> - if (MI->isDebugValue()) >> - return true; >> - >> - if (TII->isSchedulingBoundary(MI, MBB, MF)) >> - return true; >> - >> - return false; >> -} >> - >> -// isSoloInstruction - return true if instruction I must end previous >> -// packet. >> -...