Displaying 3 results from an estimated 3 matches for "xxxgenregisterinfo".
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x86genregisterinfo
2016 May 23
0
What's "register pressure set"
Hi Xing,
The register pressure sets are basically concepts that tells you how may variables can live in register at the same time.
This information is available for two different level of abstraction: per register class and per register unit. The register unit is the basic entity we use to represent a register.
Tablegen generates all of that for you, so you do not need to worry about them.
2013 Apr 24
1
[LLVMdev] Backend : What am I missing here
Hi,
While working on adding newlib to my backend I hit the following assert :
Assertion failed: BestRC && "Couldn't find the register class", file
TargetRegisterInfo.cpp, line 112
The following llvm causes this :
define void @specialBreak(i8* %out) nounwind {
entry:
%out.addr = alloca i8*, align 4
store i8* %out, i8** %out.addr, align 4
%0 = load i8** %out.addr,
2016 May 23
3
What's "register pressure set"
Hi everyone,
I'm looking through codes related to registered pressure tracking, mainly the source files 'RegisterPressure.h/cpp', 'MachineRegisterInfo.h/cpp', 'TargetRegisterInfo.h/cpp'.
There is a concept I can hardly understand, the 'register pressure set'. Class 'TargetRegisterInfo' defines two virtual methods 'getRegClassPressureSets' and