Displaying 7 results from an estimated 7 matches for "mbb2".
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mbb
2012 Mar 22
1
[LLVMdev] Problem using a label to a MachineBasicBlock
Can you please post the code to split a MachineBasicBlock?
I am trying to split a MachineBasicBlock at a specific instruction in the
MBB, let us say, into MBB1 and MBB2. This instruction should go into MBB2.
Also MBB1 should have an unconditional branch to MBB2 as the terminator.
(quite similar to splitBasicBlock in BasicBlock.cpp)
Meanwhile, I am trying to come up with a variant of SplitCriticalEdge to do
this but if someone can provide the code to split a MBB,...
2011 Nov 30
0
[LLVMdev] Problem using a label to a MachineBasicBlock
Using 'NEW_BB->setIsLandingPad(true);' seems to resolve everything.
Greetings,
Jeroen Dobbelaere
[...]
2011 Nov 30
2
[LLVMdev] Problem using a label to a MachineBasicBlock
Hi all,
I think that I came somewhat closer to a solution for splitting a
MachineBasicBlock for a PSEUDO_CALL_R instruction and having a label to the new MBB:
For following piece of code:
---
typedef int callme_t(int a, int b);
callme_t* c01;
int foo(int a, int b)
{
return c01(a,b); // MachineBasicBlock will be split at call instruction
}
---
I have initially following correspondence:
BB1
2015 Jun 04
2
[LLVMdev] Assert in BlockFrequency pass
> On 2015-Jun-04, at 12:45, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote:
>
>> On 2015-Jun-04, at 12:28, Ivan Baev <ibaev at codeaurora.org> wrote:
>>
>> Hi, we got the following assert:
>>
>> assert(!Working[0].isLoopHeader() && "entry block is a loop header");
>>
>> [in
2010 Jan 15
2
[LLVMdev] <IsKill> getting from MachineOperand is just <Used> attribute from logic.
...ister alloction by adjusting
register using. I scan MachineBasicBlock to analyze operand's IsKill, IsDead , IsDef attribute to get a physical register's liverange. But I get a strange case at MBB.jpg.
R4 is marked <kill> at MBB0. If I scan R4's liverange by [MBB0->MBB1->MBB2]. I will find R4 first is killed, then is used. It can not unlogisch. Attually R4 just is <Used>. It will cause my optimization pass crash(Actually, I ingore Live In message of MBB. I recollect live in messges at my pass.).
1. Does <kill> attribute of R4 at MBB0 is a unimportant and...
2010 Jan 15
0
[LLVMdev] <IsKill> getting from MachineOperand is just <Used> attribute from logic.
...sDead , IsDef attribute to get a physical register's liverange. But I get a strange case at MBB.jpg.
You can also look at RegisterScavenging.cpp and MachineVerifier.cpp. They are doing the same thing.
> R4 is marked <kill> at MBB0. If I scan R4's liverange by [MBB0->MBB1->MBB2]. I will find R4 first is killed, then is used. It can not unlogisch. Attually R4 just is <Used>. It will cause my optimization pass crash(Actually, I ingore Live In message of MBB. I recollect live in messges at my pass.).
A register should not be used after it is killed, and if it is neede...
2017 Oct 11
2
{ARM} IfConversion does not detect BX instruction as a branch
On Tue, Oct 10, 2017 at 4:48 PM, Friedman, Eli via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> On 10/9/2017 3:10 AM, Gaël Jobin via llvm-dev wrote:
>
> Hi all,
>
> I got a silly bug when compiling our project with the latest Clang. Here's
> the outputted assembly:
>
> tst r3, #255
> strbeq r6, [r7]
> ldreq r6, [r4, r6, lsl #2]
> strne r6, [r7, #4]