I want to create a vector version sqrt as the following.
Value *Approx::CreateFSqrt(IRBuilder<> &builder, Value *v, const char*
Name) {
Type *tys[] = {v->getType()};
Module* M = currF->getParent();
Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd);
CallInst *CI = builder.CreateCall(sqrtv, v, Name);
return CI;
}
Here is Value *v is <2 x double>
However, it outputs Assertion `isa<X>(Val) &&
"cast<Ty>() argument of
incompatible type! any idea?
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Shahid, Asghar-ahmad
2015-Apr-18 03:50 UTC
[LLVMdev] how can I create an SSE instrinsics sqrt?
Hi zhi,
You have to also pass the value type to getDecalaration() API such as
Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd,
v->getType());
Regards,
Shahid
From: llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] On
Behalf Of zhi chen
Sent: Saturday, April 18, 2015 5:52 AM
To: LLVM Dev
Subject: [LLVMdev] how can I create an SSE instrinsics sqrt?
I want to create a vector version sqrt as the following.
Value *Approx::CreateFSqrt(IRBuilder<> &builder, Value *v, const char*
Name) {
Type *tys[] = {v->getType()};
Module* M = currF->getParent();
Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd);
CallInst *CI = builder.CreateCall(sqrtv, v, Name);
return CI;
}
Here is Value *v is <2 x double>
However, it outputs Assertion `isa<X>(Val) &&
"cast<Ty>() argument of incompatible type! any idea?
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Thanks, Shahid. It is fixed now. On Fri, Apr 17, 2015 at 8:50 PM, Shahid, Asghar-ahmad < Asghar-ahmad.Shahid at amd.com> wrote:> Hi zhi, > > > > You have to also pass the value type to getDecalaration() API such as > > > > Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd, > v->getType()); > > > > Regards, > > Shahid > > > > *From:* llvmdev-bounces at cs.uiuc.edu [mailto:llvmdev-bounces at cs.uiuc.edu] *On > Behalf Of *zhi chen > *Sent:* Saturday, April 18, 2015 5:52 AM > *To:* LLVM Dev > *Subject:* [LLVMdev] how can I create an SSE instrinsics sqrt? > > > > I want to create a vector version sqrt as the following. > > > > Value *Approx::CreateFSqrt(IRBuilder<> &builder, Value *v, const char* > Name) { > > Type *tys[] = {v->getType()}; > > Module* M = currF->getParent(); > > Value* sqrtv = Intrinsic::getDeclaration(M, Intrinsic::x86_sse2_sqrt_pd); > > CallInst *CI = builder.CreateCall(sqrtv, v, Name); > > > > return CI; > > } > > > > Here is Value *v is <2 x double> > > However, it outputs Assertion `isa<X>(Val) && "cast<Ty>() argument of > incompatible type! any idea? >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20150417/22cac6df/attachment.html>