CMakeLists.txt                               |   1 +
 doc/langref.html.in                          | 171 +++++++++++++++++++++++++++++---
 src/ir.cpp                                   |   6 +-
 std/special/compiler_rt/extendXfYf2.zig      |  87 ++++++++++++++++
 std/special/compiler_rt/extendXfYf2_test.zig | 108 ++++++++++++++++++++
 std/special/compiler_rt/index.zig            |   2 +
 test/behavior.zig                            |   1 +
 test/cases/widening.zig                      |  26 +++++
 8 files changed, 384 insertions(+), 18 deletions(-)