Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180208' into staging

tcg generic vectors

# gpg: Signature made Thu 08 Feb 2018 16:47:16 GMT
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20180208:
  tcg/aarch64: Add vector operations
  tcg/i386: Add vector operations
  target/arm: Use vector infrastructure for aa64 orr/bic immediate
  target/arm: Use vector infrastructure for aa64 multiplies
  target/arm: Use vector infrastructure for aa64 compares
  target/arm: Use vector infrastructure for aa64 constant shifts
  target/arm: Use vector infrastructure for aa64 dup/movi
  target/arm: Use vector infrastructure for aa64 mov/not/neg
  target/arm: Use vector infrastructure for aa64 add/sub/logic
  target/arm: Align vector registers
  tcg/optimize: Handle vector opcodes during optimize
  tcg: Add generic vector helpers with a scalar operand
  tcg: Add generic helpers for saturating arithmetic
  tcg: Add generic vector ops for multiplication
  tcg: Add generic vector ops for comparisons
  tcg: Add generic vector ops for constant shifts
  tcg: Add generic vector expanders
  tcg: Standardize integral arguments to expanders
  tcg: Add types and basic operations for host vectors
  tcg: Allow multiple word entries into the constant pool

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/configure b/configure
index 831ebf248f..00695c7ea7 100755
--- a/configure
+++ b/configure
@@ -5001,6 +5001,50 @@ if compile_prog "" "" ; then
 fi
 
 ########################################
+# See if 16-byte vector operations are supported.
+# Even without a vector unit the compiler may expand these.
+# There is a bug in old GCC for PPC that crashes here.
+# Unfortunately it's the system compiler for Centos 7.
+
+cat > $TMPC << EOF
+typedef unsigned char U1 __attribute__((vector_size(16)));
+typedef unsigned short U2 __attribute__((vector_size(16)));
+typedef unsigned int U4 __attribute__((vector_size(16)));
+typedef unsigned long long U8 __attribute__((vector_size(16)));
+typedef signed char S1 __attribute__((vector_size(16)));
+typedef signed short S2 __attribute__((vector_size(16)));
+typedef signed int S4 __attribute__((vector_size(16)));
+typedef signed long long S8 __attribute__((vector_size(16)));
+static U1 a1, b1;
+static U2 a2, b2;
+static U4 a4, b4;
+static U8 a8, b8;
+static S1 c1;
+static S2 c2;
+static S4 c4;
+static S8 c8;
+static int i;
+int main(void)
+{
+  a1 += b1; a2 += b2; a4 += b4; a8 += b8;
+  a1 -= b1; a2 -= b2; a4 -= b4; a8 -= b8;
+  a1 *= b1; a2 *= b2; a4 *= b4; a8 *= b8;
+  a1 &= b1; a2 &= b2; a4 &= b4; a8 &= b8;
+  a1 |= b1; a2 |= b2; a4 |= b4; a8 |= b8;
+  a1 ^= b1; a2 ^= b2; a4 ^= b4; a8 ^= b8;
+  a1 <<= i; a2 <<= i; a4 <<= i; a8 <<= i;
+  a1 >>= i; a2 >>= i; a4 >>= i; a8 >>= i;
+  c1 >>= i; c2 >>= i; c4 >>= i; c8 >>= i;
+  return 0;
+}
+EOF
+
+vector16=no
+if compile_prog "" "" ; then
+  vector16=yes
+fi
+
+########################################
 # check if getauxval is available.
 
 getauxval=no
@@ -6329,6 +6373,10 @@ if test "$atomic64" = "yes" ; then
   echo "CONFIG_ATOMIC64=y" >> $config_host_mak
 fi
 
+if test "$vector16" = "yes" ; then
+  echo "CONFIG_VECTOR16=y" >> $config_host_mak
+fi
+
 if test "$getauxval" = "yes" ; then
   echo "CONFIG_GETAUXVAL=y" >> $config_host_mak
 fi