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gcc4.9.0 build error: insn does not satisfy its constraints #36569

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haolujun opened this issue Feb 8, 2020 · 4 comments
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gcc4.9.0 build error: insn does not satisfy its constraints #36569

haolujun opened this issue Feb 8, 2020 · 4 comments
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@gadagashwini-zz
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stat:awaiting response Status - Awaiting response from author TF 1.14 for issues seen with TF 1.14 type:build/install Build and install issues

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@haolujun
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haolujun commented Feb 8, 2020 •
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HI :
I want to use avx512 to compile tensorflow, so get update gcc from 4.8.5 to 4.9.0, tensorflow is 1.14.

bazel command:

bazel build tensorflow:libtensorflow_cc.so -c opt --copt=-march=native --copt=-mfpmath=both  --copt=-mfma --copt=-mavx --copt=-mavx2 --copt=-mavx512f

error:

external/fft2d/fft/fftsg.c: In function 'cftf162':
external/fft2d/fft/fftsg.c:3028:1: error: insn does not satisfy its constraints:
 }
 ^
(insn 488 487 335 2 (set (reg:DF 28 xmm7 [orig:225 D.7431 ] [225])
        (plus:DF (reg:DF 28 xmm7 [orig:225 D.7431 ] [225])
            (reg:DF 55 xmm18 [orig:225 D.7431 ] [225]))) external/fft2d/fft/fftsg.c:2937 764 {*fop_df_comm_mixed}
     (nil))
external/fft2d/fft/fftsg.c:3028:1: internal compiler error: in copyprop_hardreg_forward_1, at regcprop.c:775
0x82e7d8 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*)
	../../gcc/rtl-error.c:109
0x82e7ff _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
	../../gcc/rtl-error.c:120
0x8098a1 copyprop_hardreg_forward_1
	../../gcc/regcprop.c:775
0x8098a1 copyprop_hardreg_forward
	../../gcc/regcprop.c:1110
0x8098a1 execute
	../../gcc/regcprop.c:1283
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Target //tensorflow:libtensorflow_cc.so failed to build
Use --verbose_failures to see the command lines of failed build steps.

it seemd that fftsg.c may be has error, but when I compile fftsg.c only, there was no error.

gcc fftsg.c -mavx -mavx2 -mavx512f -march=native -mfma -lm //it's ok
@haolujun
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haolujun commented Feb 9, 2020

I use gcc-7.3.0 and build succeed. so I think, this is a gcc bug.

@gadagashwini-zz gadagashwini-zz added TF 1.14 for issues seen with TF 1.14 type:build/install Build and install issues labels Feb 10, 2020
@gadagashwini-zz
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@haolujun, Glad that its resolved. Tensorflow tested build configuration doc says Tensorflow supports GCC 7.3.1. Please take a look at doc here. Thanks

@gadagashwini-zz gadagashwini-zz added the stat:awaiting response Status - Awaiting response from author label Feb 10, 2020
@gadagashwini-zz
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@haolujun, Closing since its resolved.

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