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| author | Joseph Myers <joseph@codesourcery.com> | 2016-11-23 23:32:54 +0000 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2016-11-23 23:32:54 +0000 |
| commit | 03f24169cd08ba3dca65248ff7cc4d7a18d35a48 (patch) | |
| tree | 4e33e2bd653cb98b8c630bb7f24924b2057de920 /gcc | |
| parent | 469585df2d22f325c50e1614d397a0a38b29df6f (diff) | |
| download | gcc-03f24169cd08ba3dca65248ff7cc4d7a18d35a48.zip gcc-03f24169cd08ba3dca65248ff7cc4d7a18d35a48.tar.gz gcc-03f24169cd08ba3dca65248ff7cc4d7a18d35a48.tar.bz2 | |
Add another e500 subreg pattern.
Building glibc for powerpc-linux-gnuspe --enable-e500-double, given
the patch <https://gcc.gnu.org/ml/gcc-patches/2016-11/msg02404.html>
applied, fails with errors such as:
../sysdeps/ieee754/ldbl-128ibm/s_modfl.c: In function '__modfl':
../sysdeps/ieee754/ldbl-128ibm/s_modfl.c:91:1: error: unrecognizable insn:
}
^
(insn 31 30 32 2 (set (reg:DF 203)
(subreg:DF (reg:TI 202) 8)) "../sysdeps/ieee754/ldbl-128ibm/s_modfl.c":44 -1
(nil))
../sysdeps/ieee754/ldbl-128ibm/s_modfl.c:91:1: internal compiler error: in extract_insn, at recog.c:2311
This patch adds an insn pattern similar to various patterns already
present to handle extracting such a subreg. This allows the glibc
build to get further, until it runs into an assembler error for which
I have another patch.
gcc:
* config/rs6000/spe.md (*frob_<SPE64:mode>_ti_8): New insn
pattern.
gcc/testsuite:
* gcc.c-torture/compile/20161123-1.c: New test.
From-SVN: r242813
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/spe.md | 12 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/20161123-1.c | 7 |
4 files changed, 28 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1cd2404..27e032d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-11-23 Joseph Myers <joseph@codesourcery.com> + + * config/rs6000/spe.md (*frob_<SPE64:mode>_ti_8): New insn + pattern. + 2016-11-23 Segher Boessenkool <segher@kernel.crashing.org> * combine.c (change_zero_ext): Only change the mode of a hard register diff --git a/gcc/config/rs6000/spe.md b/gcc/config/rs6000/spe.md index 4b2220d..4d33210 100644 --- a/gcc/config/rs6000/spe.md +++ b/gcc/config/rs6000/spe.md @@ -2314,6 +2314,18 @@ } }) +(define_insn "*frob_<SPE64:mode>_ti_8" + [(set (match_operand:SPE64 0 "nonimmediate_operand" "=r") + (subreg:SPE64 (match_operand:TI 1 "input_operand" "r") 8))] + "(TARGET_E500_DOUBLE && <SPE64:MODE>mode == DFmode) + || (TARGET_SPE && <SPE64:MODE>mode != DFmode)" +{ + if (WORDS_BIG_ENDIAN) + return "evmergelo %0,%Y1,%Z1"; + else + return "evmergelo %0,%Z1,%Y1"; +}) + (define_insn "*frob_tf_ti" [(set (match_operand:TF 0 "gpc_reg_operand" "=r") (subreg:TF (match_operand:TI 1 "gpc_reg_operand" "r") 0))] diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 77ada38..0af543c 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2016-11-23 Joseph Myers <joseph@codesourcery.com> + + * gcc.c-torture/compile/20161123-1.c: New test. + 2016-11-23 Steven G. Kargl <kargl@gcc.gnu.org> PR fortran/78297 diff --git a/gcc/testsuite/gcc.c-torture/compile/20161123-1.c b/gcc/testsuite/gcc.c-torture/compile/20161123-1.c new file mode 100644 index 0000000..b8b2f1b --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/20161123-1.c @@ -0,0 +1,7 @@ +double +f (long double x) +{ + union { long double ld; double d[2]; } u; + u.ld = x; + return u.d[1]; +} |