From 03f24169cd08ba3dca65248ff7cc4d7a18d35a48 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Wed, 23 Nov 2016 23:32:54 +0000 Subject: [PATCH] Add another e500 subreg pattern. Building glibc for powerpc-linux-gnuspe --enable-e500-double, given the patch 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__ti_8): New insn pattern. gcc/testsuite: * gcc.c-torture/compile/20161123-1.c: New test. From-SVN: r242813 --- gcc/ChangeLog | 5 +++++ gcc/config/rs6000/spe.md | 12 ++++++++++++ gcc/testsuite/ChangeLog | 4 ++++ gcc/testsuite/gcc.c-torture/compile/20161123-1.c | 7 +++++++ 4 files changed, 28 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/compile/20161123-1.c 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 + + * config/rs6000/spe.md (*frob__ti_8): New insn + pattern. + 2016-11-23 Segher Boessenkool * 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__ti_8" + [(set (match_operand:SPE64 0 "nonimmediate_operand" "=r") + (subreg:SPE64 (match_operand:TI 1 "input_operand" "r") 8))] + "(TARGET_E500_DOUBLE && mode == DFmode) + || (TARGET_SPE && 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 + + * gcc.c-torture/compile/20161123-1.c: New test. + 2016-11-23 Steven G. Kargl 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]; +} -- 2.7.4