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Ryan Taylor

2012-Nov-16 23:00 UTC

[LLVMdev] Assert with getZExtValue()?

Was hoping it might get some help or a better explanation of this:

/ADT/APInt.h:1217: uint64_t llvm::APInt::getZExtValue() const: Assertion
`getActiveBits() <= 64 && "Too many bits for uint64_t"'
failed.

Program received signal SIGABRT, Aborted.
0x00007ffff6eb4d05 in raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
64    ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
    in ../nptl/sysdeps/unix/sysv/linux/raise.c
(gdb) bt
#0  0x00007ffff6eb4d05 in raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007ffff6eb8ab6 in abort () at abort.c:92
#2  0x00007ffff6ead7c5 in __assert_fail (
    assertion=0x7ffff6c7c907 "getActiveBits() <= 64 &&
\"Too many bits for
uint64_t\"",
    file=<value optimized out>, line=1217, function=<value optimized
out>)
at assert.c:81
#3  0x00007ffff6c6c5cf in getZExtValue (this=<value optimized out>)
    at /home/ryan/llvm/llvm_core/trunk/include/llvm/ADT/APInt.h:1217
#4  getZExtValue (this=<value optimized out>)
    at /home/ryan/llvm/llvm_core/trunk/include/llvm/Constants.h:117
#5  cdfgPassClass::storeInstr (this=<value optimized out>) at
a2c_pass.cpp:2125
#6  0x00007ffff6c73dc1 in (anonymous namespace)::CDFGPass::runOnModule
(this=0x16c2fa0,
    M=<value optimized out>) at a2c_pass.cpp:2949
#7  0x0000000000f4cd4e in llvm::MPPassManager::runOnModule(llvm::Module&) ()
#8  0x0000000000f4d813 in llvm::PassManagerImpl::run(llvm::Module&) ()
#9  0x0000000000f4d94a in llvm::PassManager::run(llvm::Module&) ()
#10 0x0000000000525509 in main ()

Also, why does it give <value optimized out>, when I print the value I
clearly get one, unless this is some result of const prop?

Thanks.
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Eli Friedman

2012-Nov-16 23:10 UTC

head link

[LLVMdev] Assert with getZExtValue()?

On Fri, Nov 16, 2012 at 3:00 PM, Ryan Taylor <ryta1203 at gmail.com>
wrote:> Was hoping it might get some help or a better explanation of this:
>
> /ADT/APInt.h:1217: uint64_t llvm::APInt::getZExtValue() const: Assertion
> `getActiveBits() <= 64 && "Too many bits for
uint64_t"' failed.
The error message is exactly what it says: you're trying to call
getZExtValue() on an APInt whose value doesn't fit into a uint64_t.
> Program received signal SIGABRT, Aborted.
> 0x00007ffff6eb4d05 in raise (sig=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> 64    ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
>     in ../nptl/sysdeps/unix/sysv/linux/raise.c
> (gdb) bt
> #0  0x00007ffff6eb4d05 in raise (sig=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> #1  0x00007ffff6eb8ab6 in abort () at abort.c:92
> #2  0x00007ffff6ead7c5 in __assert_fail (
>     assertion=0x7ffff6c7c907 "getActiveBits() <= 64 &&
\"Too many bits for
> uint64_t\"",
>     file=<value optimized out>, line=1217, function=<value
optimized out>)
> at assert.c:81
> #3  0x00007ffff6c6c5cf in getZExtValue (this=<value optimized out>)
>     at /home/ryan/llvm/llvm_core/trunk/include/llvm/ADT/APInt.h:1217
> #4  getZExtValue (this=<value optimized out>)
>     at /home/ryan/llvm/llvm_core/trunk/include/llvm/Constants.h:117
> #5  cdfgPassClass::storeInstr (this=<value optimized out>) at
> a2c_pass.cpp:2125
> #6  0x00007ffff6c73dc1 in (anonymous namespace)::CDFGPass::runOnModule
> (this=0x16c2fa0,
>     M=<value optimized out>) at a2c_pass.cpp:2949
> #7  0x0000000000f4cd4e in
llvm::MPPassManager::runOnModule(llvm::Module&) ()
> #8  0x0000000000f4d813 in llvm::PassManagerImpl::run(llvm::Module&) ()
> #9  0x0000000000f4d94a in llvm::PassManager::run(llvm::Module&) ()
> #10 0x0000000000525509 in main ()
>
> Also, why does it give <value optimized out>, when I print the value
I
> clearly get one, unless this is some result of const prop?
No clue how gdb decides these things.  If you file a bug with a
reduced testcase, someone might find the answer.

-Eli

Ryan Taylor

2012-Nov-16 23:10 UTC

head link

[LLVMdev] Assert with getZExtValue()?

My apologies, here is the corresponding code:

         if (const Constant *CV = dyn_cast<ConstantInt>(V)) {
            if (CV && !isa<GlobalValue>(CV)) {
               if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
                  APInt constIntAP = CI->getValue();
                  char constCharSign = (constIntAP.isNegative()) ? 'n' :
'p';
                  //int constValue = abs(CI->getSExtValue());

Thanks.

On Fri, Nov 16, 2012 at 3:00 PM, Ryan Taylor <ryta1203 at gmail.com>
wrote:
> Was hoping it might get some help or a better explanation of this:
>
> /ADT/APInt.h:1217: uint64_t llvm::APInt::getZExtValue() const: Assertion
> `getActiveBits() <= 64 && "Too many bits for
uint64_t"' failed.
>
> Program received signal SIGABRT, Aborted.
> 0x00007ffff6eb4d05 in raise (sig=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> 64    ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
>     in ../nptl/sysdeps/unix/sysv/linux/raise.c
> (gdb) bt
> #0  0x00007ffff6eb4d05 in raise (sig=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> #1  0x00007ffff6eb8ab6 in abort () at abort.c:92
> #2  0x00007ffff6ead7c5 in __assert_fail (
>     assertion=0x7ffff6c7c907 "getActiveBits() <= 64 &&
\"Too many bits for
> uint64_t\"",
>     file=<value optimized out>, line=1217, function=<value
optimized out>)
> at assert.c:81
> #3  0x00007ffff6c6c5cf in getZExtValue (this=<value optimized out>)
>     at /home/ryan/llvm/llvm_core/trunk/include/llvm/ADT/APInt.h:1217
> #4  getZExtValue (this=<value optimized out>)
>     at /home/ryan/llvm/llvm_core/trunk/include/llvm/Constants.h:117
> #5  cdfgPassClass::storeInstr (this=<value optimized out>) at
> a2c_pass.cpp:2125
> #6  0x00007ffff6c73dc1 in (anonymous namespace)::CDFGPass::runOnModule
> (this=0x16c2fa0,
>     M=<value optimized out>) at a2c_pass.cpp:2949
> #7  0x0000000000f4cd4e in
llvm::MPPassManager::runOnModule(llvm::Module&)
> ()
> #8  0x0000000000f4d813 in llvm::PassManagerImpl::run(llvm::Module&) ()
> #9  0x0000000000f4d94a in llvm::PassManager::run(llvm::Module&) ()
> #10 0x0000000000525509 in main ()
>
> Also, why does it give <value optimized out>, when I print the value
I
> clearly get one, unless this is some result of const prop?
>
> Thanks.
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Ryan Taylor

2012-Nov-16 23:17 UTC

head link

[LLVMdev] Assert with getZExtValue()?

Eli,

  Thanks for responding. Yes, I read the error message but it seems odd
that it would be trying to use more than 64 bits. It compiles and executes
in gcc on 32 bit arch just fine. I'll probably take your suggestion and
file a bug with a reduced testcase.

Thanks again,

Ryan

On Fri, Nov 16, 2012 at 3:10 PM, Eli Friedman <eli.friedman at
gmail.com>wrote:
> On Fri, Nov 16, 2012 at 3:00 PM, Ryan Taylor <ryta1203 at gmail.com>
wrote:
> > Was hoping it might get some help or a better explanation of this:
> >
> > /ADT/APInt.h:1217: uint64_t llvm::APInt::getZExtValue() const:
Assertion
> > `getActiveBits() <= 64 && "Too many bits for
uint64_t"' failed.
>
> The error message is exactly what it says: you're trying to call
> getZExtValue() on an APInt whose value doesn't fit into a uint64_t.
>
> > Program received signal SIGABRT, Aborted.
> > 0x00007ffff6eb4d05 in raise (sig=6) at
> > ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> > 64    ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or
directory.
> >     in ../nptl/sysdeps/unix/sysv/linux/raise.c
> > (gdb) bt
> > #0  0x00007ffff6eb4d05 in raise (sig=6) at
> > ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> > #1  0x00007ffff6eb8ab6 in abort () at abort.c:92
> > #2  0x00007ffff6ead7c5 in __assert_fail (
> >     assertion=0x7ffff6c7c907 "getActiveBits() <= 64 &&
\"Too many bits
> for
> > uint64_t\"",
> >     file=<value optimized out>, line=1217, function=<value
optimized
> out>)
> > at assert.c:81
> > #3  0x00007ffff6c6c5cf in getZExtValue (this=<value optimized
out>)
> >     at /home/ryan/llvm/llvm_core/trunk/include/llvm/ADT/APInt.h:1217
> > #4  getZExtValue (this=<value optimized out>)
> >     at /home/ryan/llvm/llvm_core/trunk/include/llvm/Constants.h:117
> > #5  cdfgPassClass::storeInstr (this=<value optimized out>) at
> > a2c_pass.cpp:2125
> > #6  0x00007ffff6c73dc1 in (anonymous namespace)::CDFGPass::runOnModule
> > (this=0x16c2fa0,
> >     M=<value optimized out>) at a2c_pass.cpp:2949
> > #7  0x0000000000f4cd4e in
> llvm::MPPassManager::runOnModule(llvm::Module&) ()
> > #8  0x0000000000f4d813 in
llvm::PassManagerImpl::run(llvm::Module&) ()
> > #9  0x0000000000f4d94a in llvm::PassManager::run(llvm::Module&) ()
> > #10 0x0000000000525509 in main ()
> >
> > Also, why does it give <value optimized out>, when I print the
value I
> > clearly get one, unless this is some result of const prop?
>
> No clue how gdb decides these things.  If you file a bug with a
> reduced testcase, someone might find the answer.
>
> -Eli
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Ryan Taylor

2012-Dec-04 18:56 UTC

head link

[LLVMdev] Assert with getZExtValue()?

So is there a way to return the value as a string instead?

On Fri, Nov 16, 2012 at 3:00 PM, Ryan Taylor <ryta1203 at gmail.com>
wrote:
> Was hoping it might get some help or a better explanation of this:
>
> /ADT/APInt.h:1217: uint64_t llvm::APInt::getZExtValue() const: Assertion
> `getActiveBits() <= 64 && "Too many bits for
uint64_t"' failed.
>
> Program received signal SIGABRT, Aborted.
> 0x00007ffff6eb4d05 in raise (sig=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> 64    ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
>     in ../nptl/sysdeps/unix/sysv/linux/raise.c
> (gdb) bt
> #0  0x00007ffff6eb4d05 in raise (sig=6) at
> ../nptl/sysdeps/unix/sysv/linux/raise.c:64
> #1  0x00007ffff6eb8ab6 in abort () at abort.c:92
> #2  0x00007ffff6ead7c5 in __assert_fail (
>     assertion=0x7ffff6c7c907 "getActiveBits() <= 64 &&
\"Too many bits for
> uint64_t\"",
>     file=<value optimized out>, line=1217, function=<value
optimized out>)
> at assert.c:81
> #3  0x00007ffff6c6c5cf in getZExtValue (this=<value optimized out>)
>     at /home/ryan/llvm/llvm_core/trunk/include/llvm/ADT/APInt.h:1217
> #4  getZExtValue (this=<value optimized out>)
>     at /home/ryan/llvm/llvm_core/trunk/include/llvm/Constants.h:117
> #5  cdfgPassClass::storeInstr (this=<value optimized out>) at
> a2c_pass.cpp:2125
> #6  0x00007ffff6c73dc1 in (anonymous namespace)::CDFGPass::runOnModule
> (this=0x16c2fa0,
>     M=<value optimized out>) at a2c_pass.cpp:2949
> #7  0x0000000000f4cd4e in
llvm::MPPassManager::runOnModule(llvm::Module&)
> ()
> #8  0x0000000000f4d813 in llvm::PassManagerImpl::run(llvm::Module&) ()
> #9  0x0000000000f4d94a in llvm::PassManager::run(llvm::Module&) ()
> #10 0x0000000000525509 in main ()
>
> Also, why does it give <value optimized out>, when I print the value
I
> clearly get one, unless this is some result of const prop?
>
> Thanks.
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Krzysztof Parzyszek

2012-Dec-04 19:01 UTC

head link

[LLVMdev] Assert with getZExtValue()?

On 12/4/2012 12:56 PM, Ryan Taylor wrote:> So is there a way to return the value as a string instead?
>

There are several ways:

include/llvm/ADT/APInt.h


   /// toString - Converts an APInt to a string and append it to Str. 
Str is
   /// commonly a SmallString.
   void toString(SmallVectorImpl<char> &Str, unsigned Radix, bool
Signed,
                 bool formatAsCLiteral = false) const;

   /// Considers the APInt to be unsigned and converts it into a string 
in the
   /// radix given. The radix can be 2, 8, 10 16, or 36.
   void toStringUnsigned(SmallVectorImpl<char> &Str, unsigned Radix = 
10) const {
     toString(Str, Radix, false, false);
   }

   /// Considers the APInt to be signed and converts it into a string in the
   /// radix given. The radix can be 2, 8, 10, 16, or 36.
   void toStringSigned(SmallVectorImpl<char> &Str, unsigned Radix =
10)
const {
     toString(Str, Radix, true, false);
   }

   /// toString - This returns the APInt as a std::string.  Note that 
this is an
   /// inefficient method.  It is better to pass in a 
SmallVector/SmallString
   /// to the methods above to avoid thrashing the heap for the string.
   std::string toString(unsigned Radix, bool Signed) const;


-Krzysztof



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