Demikhovsky, Elena
2014-Oct-26 10:34 UTC
[LLVMdev] Masked vector intrinsics and name mangling
Hi, The proposed masked vector intrinsics are overloaded - one intrinsic ID for multiple types. After name mangling it will look like: %res = call <16 x i32> @llvm.masked.load.v16i32.p0i32.v16i32.i32.v16i1(i32* %addr, <16 x i32>%passthru, i32 4, <16 x i1> %mask) 6 types x 3 vector sizes = 18 names for one operation I propose to remove name mangling from these intrinsics: %res = call <16 x i32> @llvm.masked.load (i32* %addr, <16 x i32>%passthru, i32 4, <16 x i1> %mask) def int_masked_load : Intrinsic<[llvm_anyvector_ty], [llvm_anyptr_ty, llvm_anyvector_ty, llvm_anyint_ty, llvm_anyvector_ty], [IntrReadArgMem, NoNameMangling]>; // new property It will significantly simplify reading and manual writing. What do you think? Thank you. - Elena --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20141026/bf0205a1/attachment.html>
----- Original Message -----> From: "Elena Demikhovsky" <elena.demikhovsky at intel.com> > To: llvmdev at cs.uiuc.edu > Sent: Sunday, October 26, 2014 5:34:46 AM > Subject: [LLVMdev] Masked vector intrinsics and name mangling > > > > Hi, > > The proposed masked vector intrinsics are overloaded - one intrinsic > ID for multiple types. > After name mangling it will look like: > > %res = call <16 x i32> > @llvm.masked.load.v16i32.p0i32.v16i32.i32.v16i1(i32* %addr, <16 x > i32>%passthru, i32 4, <16 x i1> %mask) > 6 types x 3 vector sizes = 18 names for one operation > > I propose to remove name mangling from these intrinsics: > %res = call <16 x i32> @llvm.masked.load (i32* %addr, <16 x > i32>%passthru, i32 4, <16 x i1> %mask) > > def int_masked_load : > Intrinsic<[llvm_anyvector_ty], [llvm_anyptr_ty, llvm_anyvector_ty, > llvm_anyint_ty, llvm_anyvector_ty], > [IntrReadArgMem, NoNameMangling]>; // new property > > It will significantly simplify reading and manual writing. > What do you think?We already have this kind of situation for @llvm.memcpy and friends, and while it can make the IR look verbose at times, we have reasonable interfaces for creating and manipulating these at the C++ level, so I don't think it is worthwhile to further complicate the system. -Hal> > Thank you. > > > * Elena > > > > > > --------------------------------------------------------------------- > Intel Israel (74) Limited > > This e-mail and any attachments may contain confidential material for > the sole use of the intended recipient(s). Any review or distribution > by others is strictly prohibited. If you are not the intended > recipient, please contact the sender and delete all copies. > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev >-- Hal Finkel Assistant Computational Scientist Leadership Computing Facility Argonne National Laboratory
Demikhovsky, Elena
2014-Oct-26 15:17 UTC
[LLVMdev] Masked vector intrinsics and name mangling
Hal, thank you for your opinion. I just was confused when I saw so long name " llvm.masked.load.v16i32.p0i32.v16i32.i32.v16i1" . If we stay with a short name, we do a step towards instruction form. - Elena -----Original Message----- From: Hal Finkel [mailto:hfinkel at anl.gov] Sent: Sunday, October 26, 2014 17:06 To: Demikhovsky, Elena Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] Masked vector intrinsics and name mangling ----- Original Message -----> From: "Elena Demikhovsky" <elena.demikhovsky at intel.com> > To: llvmdev at cs.uiuc.edu > Sent: Sunday, October 26, 2014 5:34:46 AM > Subject: [LLVMdev] Masked vector intrinsics and name mangling > > > > Hi, > > The proposed masked vector intrinsics are overloaded - one intrinsic > ID for multiple types. > After name mangling it will look like: > > %res = call <16 x i32> > @llvm.masked.load.v16i32.p0i32.v16i32.i32.v16i1(i32* %addr, <16 x > i32>%passthru, i32 4, <16 x i1> %mask) > 6 types x 3 vector sizes = 18 names for one operation > > I propose to remove name mangling from these intrinsics: > %res = call <16 x i32> @llvm.masked.load (i32* %addr, <16 x > i32>%passthru, i32 4, <16 x i1> %mask) > > def int_masked_load : > Intrinsic<[llvm_anyvector_ty], [llvm_anyptr_ty, llvm_anyvector_ty, > llvm_anyint_ty, llvm_anyvector_ty], [IntrReadArgMem, NoNameMangling]>; > // new property > > It will significantly simplify reading and manual writing. > What do you think?We already have this kind of situation for @llvm.memcpy and friends, and while it can make the IR look verbose at times, we have reasonable interfaces for creating and manipulating these at the C++ level, so I don't think it is worthwhile to further complicate the system. -Hal> > Thank you. > > > * Elena > > > > > > --------------------------------------------------------------------- > Intel Israel (74) Limited > > This e-mail and any attachments may contain confidential material for > the sole use of the intended recipient(s). Any review or distribution > by others is strictly prohibited. If you are not the intended > recipient, please contact the sender and delete all copies. > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev >-- Hal Finkel Assistant Computational Scientist Leadership Computing Facility Argonne National Laboratory --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies.