Kevin Qin
2014-Jul-09 07:03 UTC
[LLVMdev] Help!!!!Help!!!! " LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] " problem!!!!!!!!!!!!!!!!!!
Hi, Can you show us the command line you are using? At least can you tell us the backend you tried on? If you can upload the test case as well, it will be very useful to find out the problem. Regards, Kevin 2014-07-10 1:53 GMT+08:00 yalong at multicorewareinc.com < yalong at multicorewareinc.com>:> Hi all, > I am new to llvm. I need help. Thank you every! > > I want to realize vcvtt.f16.f32 NEON instruction by llvm. This > instruction covert top-16bits of a single type to f16. I use the intrinsics > function llvm.convert.to.fp16, but cannot llc , *I meet is following > problem* : > > LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] > 0x9fc0750: f32,ch = load 0x3aafd68, 0x9fc2a20, > 0x9feaab0<LD4[%sunkaddr85033]> [ORD=125117] [ID=15] > 0x9fc2a20: i32 = add 0x9fed880, 0x9fd9ea0 [ORD=125115] [ID=13] > 0x9fed880: i32,ch = CopyFromReg 0x3aafd68, 0x9fbea90 [ORD=125114] [ID=9] > 0x9fbea90: i32 = Register %vreg13999 [ORD=125114] [ID=1] > 0x9fd9ea0: i32 = Constant<80> [ORD=125115] [ID=2] > 0x9feaab0: i32 = undef [ORD=125117] [ID=4] > In function: internal_function_69 > Command exited with non-zero status 1 > > If I change the method, I use " %1 = fptrunc float %0 to half ", > then " %2 = bitcast half %1 to i16", I meet samiliar problem, *the log is > following*: > > LLVM ERROR: Cannot select: 0x9f554b0: ch = store 0x9d0f28c, 0x9f5d900, > 0x9f54ba8, 0x9f54b20<ST2[FixedStack0](align=4), trunc to f16> [ID=52] > 0x9f5d900: f32,ch = load 0x9f5e290, 0x9f5dd40, 0x9f54b20<LD4[%sunkaddr69]> > [ORD=1810] [ID=51] > 0x9f5dd40: i32 = add 0x9f55318, 0x9f5e0f8 [ORD=1808] [ID=31] > 0x9f55318: i32,ch = CopyFromReg 0x9d0f28c, 0x9f6a3a0 [ORD=1796] [ID=26] > 0x9f6a3a0: i32 = Register %vreg32 [ORD=1796] [ID=1] > 0x9f5e0f8: i32 = Constant<64> [ORD=1808] [ID=17] > 0x9f54b20: i32 = undef [ORD=1797] [ID=6] > 0x9f54ba8: i32 = FrameIndex<0> [ID=24] > 0x9f54b20: i32 = undef [ORD=1797] [ID=6] > In function: testVCVTT32TO16Function > > > Anyone can help me?? Thank you again. > > ------------------------------ > yalong at multicorewareinc.com > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > >-- Best Regards, Kevin Qin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140709/7049dc12/attachment.html>
yalong at multicorewareinc.com
2014-Jul-09 17:53 UTC
[LLVMdev] Help!!!!Help!!!! " LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] " problem!!!!!!!!!!!!!!!!!!
Hi all,�� � I am new to llvm. I need help. Thank you every! � � I want to realize vcvtt.f16.f32 �NEON instruction by llvm. This instruction covert top-16bits of a single type to f16. I use the intrinsics function llvm.convert.to.fp16, but cannot llc ,�I meet is following problem : LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] 0x9fc0750: f32,ch = load 0x3aafd68, 0x9fc2a20, 0x9feaab0<LD4[%sunkaddr85033]> [ORD=125117] [ID=15] 0x9fc2a20: i32 = add 0x9fed880, 0x9fd9ea0 [ORD=125115] [ID=13] 0x9fed880: i32,ch = CopyFromReg 0x3aafd68, 0x9fbea90 [ORD=125114] [ID=9] 0x9fbea90: i32 = Register %vreg13999 [ORD=125114] [ID=1] 0x9fd9ea0: i32 = Constant<80> [ORD=125115] [ID=2] 0x9feaab0: i32 = undef [ORD=125117] [ID=4] In function: internal_function_69 Command exited with non-zero status 1 � � If I change the method, I use " %1 =�fptrunc float %0 �to half ", then " %2 = bitcast half %1 to i16", I meet samiliar problem, the log is following: LLVM ERROR: Cannot select: 0x9f554b0: ch = store 0x9d0f28c, 0x9f5d900, 0x9f54ba8, 0x9f54b20<ST2[FixedStack0](align=4), trunc to f16> [ID=52] 0x9f5d900: f32,ch = load 0x9f5e290, 0x9f5dd40, 0x9f54b20<LD4[%sunkaddr69]> [ORD=1810] [ID=51] 0x9f5dd40: i32 = add 0x9f55318, 0x9f5e0f8 [ORD=1808] [ID=31] 0x9f55318: i32,ch = CopyFromReg 0x9d0f28c, 0x9f6a3a0 [ORD=1796] [ID=26] 0x9f6a3a0: i32 = Register %vreg32 [ORD=1796] [ID=1] 0x9f5e0f8: i32 = Constant<64> [ORD=1808] [ID=17] 0x9f54b20: i32 = undef [ORD=1797] [ID=6] 0x9f54ba8: i32 = FrameIndex<0> [ID=24] 0x9f54b20: i32 = undef [ORD=1797] [ID=6] In function: testVCVTT32TO16Function� � � Anyone can help me?? Thank you again. yalong at multicorewareinc.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140709/18dcc167/attachment.html>
yalong at multicorewareinc.com
2014-Jul-09 22:30 UTC
[LLVMdev] Help!!!!Help!!!! " LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] " problem!!!!!!!!!!!!!!!!!!
Thank you Kevin!!! If I use fptrunc and bitcast realise NEON vcvtt ( I can sure, "fptrunc double %tmp to float" is right, but "fptrunc float %tmp to half" is wrong). My target platform is MIPS. The command as following: NEON: vcvtt.f16.f32 s2, s0 llvm Code: %Vt_2 = load float* %VFP_s0, align 4 %Vt3_1 = fptrunc float %Vt_2 to half %Vt4_1 = bitcast half %Vt3_1 to i16 %Vt2_2 = bitcast float* %VFP_s2 to <2 x i16>* %Vrti_1 = load <2 x i16>* %Vt2_2, align 4 %Vrti_2 = insertelement <2 x i16> %Vrti_1, i16 %Vt4_1, i32 1 %Vt2_3 = bitcast float* %VFP_s2 to <2 x i16>* store <2 x i16> %Vrti_2, <2 x i16>* %Vt2_3, align 4 Error Log:LLVM ERROR: Cannot select: 0x9f554b0: ch = store 0x9d0f28c, 0x9f5d900, 0x9f54ba8, 0x9f54b20<ST2[FixedStack0](align=4), trunc to f16> [ID=52] 0x9f5d900: f32,ch = load 0x9f5e290, 0x9f5dd40, 0x9f54b20<LD4[%sunkaddr69]> [ORD=1810] [ID=51] 0x9f5dd40: i32 = add 0x9f55318, 0x9f5e0f8 [ORD=1808] [ID=31] 0x9f55318: i32,ch = CopyFromReg 0x9d0f28c, 0x9f6a3a0 [ORD=1796] [ID=26] 0x9f6a3a0: i32 = Register %vreg32 [ORD=1796] [ID=1] 0x9f5e0f8: i32 = Constant<64> [ORD=1808] [ID=17] 0x9f54b20: i32 = undef [ORD=1797] [ID=6] 0x9f54ba8: i32 = FrameIndex<0> [ID=24] 0x9f54b20: i32 = undef [ORD=1797] [ID=6] In function: testVCVTT32TO16Function yalong at multicorewareinc.com From: Kevin QinDate: 2014-07-09 00:03To: yalong at multicorewareinc.comCC: llvmdevSubject: Re: [LLVMdev] Help!!!!Help!!!! " LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] " problem!!!!!!!!!!!!!!!!!!Hi, Can you show us the command line you are using? At least can you tell us the backend you tried on? If you can upload the test case as well, it will be very useful to find out the problem. Regards,Kevin 2014-07-10 1:53 GMT+08:00 yalong at multicorewareinc.com <yalong at multicorewareinc.com>: Hi all, I am new to llvm. I need help. Thank you every! I want to realize vcvtt.f16.f32 NEON instruction by llvm. This instruction covert top-16bits of a single type to f16. I use the intrinsics function llvm.convert.to.fp16, but cannot llc , I meet is following problem : LLVM ERROR: Cannot select: 0x9fc9680: i32 = fp32_to_fp16 0x9fc0750 [ID=16] 0x9fc0750: f32,ch = load 0x3aafd68, 0x9fc2a20, 0x9feaab0<LD4[%sunkaddr85033]> [ORD=125117] [ID=15] 0x9fc2a20: i32 = add 0x9fed880, 0x9fd9ea0 [ORD=125115] [ID=13] 0x9fed880: i32,ch = CopyFromReg 0x3aafd68, 0x9fbea90 [ORD=125114] [ID=9] 0x9fbea90: i32 = Register %vreg13999 [ORD=125114] [ID=1] 0x9fd9ea0: i32 = Constant<80> [ORD=125115] [ID=2] 0x9feaab0: i32 = undef [ORD=125117] [ID=4] In function: internal_function_69 Command exited with non-zero status 1 If I change the method, I use " %1 = fptrunc float %0 to half ", then " %2 = bitcast half %1 to i16", I meet samiliar problem, the log is following: LLVM ERROR: Cannot select: 0x9f554b0: ch = store 0x9d0f28c, 0x9f5d900, 0x9f54ba8, 0x9f54b20<ST2[FixedStack0](align=4), trunc to f16> [ID=52] 0x9f5d900: f32,ch = load 0x9f5e290, 0x9f5dd40, 0x9f54b20<LD4[%sunkaddr69]> [ORD=1810] [ID=51] 0x9f5dd40: i32 = add 0x9f55318, 0x9f5e0f8 [ORD=1808] [ID=31] 0x9f55318: i32,ch = CopyFromReg 0x9d0f28c, 0x9f6a3a0 [ORD=1796] [ID=26] 0x9f6a3a0: i32 = Register %vreg32 [ORD=1796] [ID=1] 0x9f5e0f8: i32 = Constant<64> [ORD=1808] [ID=17] 0x9f54b20: i32 = undef [ORD=1797] [ID=6] 0x9f54ba8: i32 = FrameIndex<0> [ID=24] 0x9f54b20: i32 = undef [ORD=1797] [ID=6] In function: testVCVTT32TO16Function Anyone can help me?? Thank you again. yalong at multicorewareinc.com _______________________________________________ LLVM Developers mailing list LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev -- Best Regards, Kevin Qin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140709/be30ec2a/attachment.html>
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