Displaying 5 results from an estimated 5 matches for "myglob".
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2015 Sep 14
2
JIT: Mapping global variable in JIT'ted code to variable in running program
Hi,
I think this is probably easiest to explain with code (I only provided the
essentials for clarity):
// begin file jit.cpp
int myglobal;
void printMyGlobal() {
printf("myglobal: %d\n", myglobal);
}
int main(int argc, char *argv[]) {
// This file, jit.cpp has been compiled to bitcode (clang -S -emit-llvm
jit.cpp)
// and is read into Module M here
Module *M = ...
ExecutionEngine *ee = ...
myglobal = 42;...
2011 Dec 28
3
[LLVMdev] InstCombine "pessimizes" trunc i8 to i1?
>> Hi!
>>
>> before InstCombine (llvm::createInstructionCombiningPass()) I have
>> a trunc from i8 to i1 and then a select:
>>
>> %45 = load i8* @myGlobal, align 1
>> %tobool = trunc i8 %45 to i1
>> %cond = select i1 %tobool, float 1.000000e+00, float -1.000000e+00
>>
>> after instCombine I have:
>>
>> %29 = load i8* @myGlobal, align 1
>> %30 = and i8 %29, 1
>> %tobool = icmp ne i8 %30, 0
>> %co...
2011 Dec 27
2
[LLVMdev] InstCombine "pessimizes" trunc i8 to i1?
Hi!
before InstCombine (llvm::createInstructionCombiningPass()) I have
a trunc from i8 to i1 and then a select:
%45 = load i8* @myGlobal, align 1
%tobool = trunc i8 %45 to i1
%cond = select i1 %tobool, float 1.000000e+00, float -1.000000e+00
after instCombine I have:
%29 = load i8* @myGlobal, align 1
%30 = and i8 %29, 1
%tobool = icmp ne i8 %30, 0
%cond = select i1 %tobool, float 1.000000e+00, float -1.000000e+00
is this a bug...
2011 Dec 29
0
[LLVMdev] InstCombine "pessimizes" trunc i8 to i1?
...ed, Dec 28, 2011 at 6:45 AM, Jochen Wilhelmy <j.wilhelmy at arcor.de>wrote:
>
> >> Hi!
> >>
> >> before InstCombine (llvm::createInstructionCombiningPass()) I have
> >> a trunc from i8 to i1 and then a select:
> >>
> >> %45 = load i8* @myGlobal, align 1
> >> %tobool = trunc i8 %45 to i1
> >> %cond = select i1 %tobool, float 1.000000e+00, float -1.000000e+00
> >>
> >> after instCombine I have:
> >>
> >> %29 = load i8* @myGlobal, align 1
> >> %30 = and i8 %29, 1
> >>...
2011 Dec 28
0
[LLVMdev] InstCombine "pessimizes" trunc i8 to i1?
On Dec 27, 2011, at 5:09 AM, Jochen Wilhelmy wrote:
> Hi!
>
> before InstCombine (llvm::createInstructionCombiningPass()) I have
> a trunc from i8 to i1 and then a select:
>
> %45 = load i8* @myGlobal, align 1
> %tobool = trunc i8 %45 to i1
> %cond = select i1 %tobool, float 1.000000e+00, float -1.000000e+00
>
> after instCombine I have:
>
> %29 = load i8* @myGlobal, align 1
> %30 = and i8 %29, 1
> %tobool = icmp ne i8 %30, 0
> %cond = select i1 %tobool, float 1.00...