1.37.22: fix ssaify bug where we failed to update the location of values as we…

… moved them around, causing us to zero out the wrong thing in another place and ensuing hilarity (#1212)

version_38: Add --trap-mode=allow/clamp/js argument to asm2wasm and s2wasm (#1210)

* Add --trap-mode=allow/clamp/js argument to asm2wasm and s2wasm

* Update asm2wasm and auto_update_tests scripts to use --trap-mode

* Throw std::invalid_argument instead of adding a new Invalid TrapMode type

* Remove legacy asm2wasm trap mode arguments

1.37.20: Inline many (#1125)

* Improve inlining pass to inline single-use functions that are fairly small, which makes it useful for removing unnecessary global constructors from clang.

 * Add an inlining-optimizing pass that also optimizes where it inlined, as new opportunities arise. enable that it by default in O2+

* In addition, in -O3+ also inline small functions with multiple uses. This helps a lot with things like safe-int-divide functions (where each int divide is replaced by a safe divide that won't trap). Inlining gets rid of around half of the overhead there.