Merge remote-tracking branch 'origin/released'

Conflicts:
	fontconfig/.gitignore
	libX11/src/ConvSel.c
	libX11/src/CrGlCur.c
	libX11/src/CrWindow.c
	libX11/src/GetDflt.c
	libX11/src/Window.c
	libX11/src/xlibi18n/XimProto.h
	libX11/src/xlibi18n/lcDynamic.c
	libxcb/src/.gitignore
	libxcb/src/xcb_ext.c
	libxcb/src/xcb_xid.c
	mesalib/src/glsl/.gitignore
	mesalib/src/glsl/glcpp/.gitignore
	mesalib/src/mapi/glapi/gen/glX_API.xml
	mesalib/src/mapi/glapi/glapi_getproc.c
	mesalib/src/mesa/main/.gitignore
	mesalib/src/mesa/main/syncobj.c
	mesalib/src/mesa/program/.gitignore
	xkbcomp/listing.c
	xkbcomp/xkbpath.c
	xorg-server/.gitignore
	xorg-server/Xext/xvmain.c
	xorg-server/dix/dispatch.c
	xorg-server/hw/xwin/glx/winpriv.h
	xorg-server/hw/xwin/winprefsyacc.y
	xorg-server/hw/xwin/winscrinit.c
	xorg-server/xkeyboard-config/rules/bin/ml1_s.sh
	xorg-server/xkeyboard-config/rules/bin/ml1v1_s.sh
	xorg-server/xkeyboard-config/rules/bin/ml1v_s.sh
	xorg-server/xkeyboard-config/rules/bin/ml_s.sh
	xorg-server/xkeyboard-config/rules/bin/mlv_s.sh
	xorg-server/xkeyboard-config/rules/compat/.gitignore

1 files changed, 47 insertions, 0 deletions

diff --git a/mesalib/src/glsl/ir_constant_expression.cpp b/mesalib/src/glsl/ir_constant_expression.cpp
index 08a33285b..7a4d15f43 100644
--- a/mesalib/src/glsl/ir_constant_expression.cpp
+++ b/mesalib/src/glsl/ir_constant_expression.cpp
@@ -71,6 +71,29 @@ dot(ir_constant *op0, ir_constant *op1)
    return result;
 }
 
+/* This method is the only one supported by gcc.  Unions in particular
+ * are iffy, and read-through-converted-pointer is killed by strict
+ * aliasing.  OTOH, the compiler sees through the memcpy, so the
+ * resulting asm is reasonable.
+ */
+static float
+bitcast_u2f(unsigned int u)
+{
+   assert(sizeof(float) == sizeof(unsigned int));
+   float f;
+   memcpy(&f, &u, sizeof(f));
+   return f;
+}
+
+static unsigned int
+bitcast_f2u(float f)
+{
+   assert(sizeof(float) == sizeof(unsigned int));
+   unsigned int u;
+   memcpy(&u, &f, sizeof(f));
+   return u;
+}
+
 ir_constant *
 ir_rvalue::constant_expression_value(struct hash_table *variable_context)
 {
@@ -207,6 +230,30 @@ ir_expression::constant_expression_value(struct hash_table *variable_context)
 	 data.u[c] = op[0]->value.i[c];
       }
       break;
+   case ir_unop_bitcast_i2f:
+      assert(op[0]->type->base_type == GLSL_TYPE_INT);
+      for (unsigned c = 0; c < op[0]->type->components(); c++) {
+	 data.f[c] = bitcast_u2f(op[0]->value.i[c]);
+      }
+      break;
+   case ir_unop_bitcast_f2i:
+      assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+      for (unsigned c = 0; c < op[0]->type->components(); c++) {
+	 data.i[c] = bitcast_f2u(op[0]->value.f[c]);
+      }
+      break;
+   case ir_unop_bitcast_u2f:
+      assert(op[0]->type->base_type == GLSL_TYPE_UINT);
+      for (unsigned c = 0; c < op[0]->type->components(); c++) {
+	 data.f[c] = bitcast_u2f(op[0]->value.u[c]);
+      }
+      break;
+   case ir_unop_bitcast_f2u:
+      assert(op[0]->type->base_type == GLSL_TYPE_FLOAT);
+      for (unsigned c = 0; c < op[0]->type->components(); c++) {
+	 data.u[c] = bitcast_f2u(op[0]->value.f[c]);
+      }
+      break;
    case ir_unop_any:
       assert(op[0]->type->is_boolean());
       data.b[0] = false;