Record temporary static references in generator witnesses

[matthewjasper]

Closes #66695

• Record the pointer to static's type in MIR.
• Normalize the static's type (so that constants can be compared correctly).

[rust-highfive]

r? @cramertj

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[cramertj]

@bors r+

[bors]

📌 Commit 1f850f6 has been approved by cramertj

[rust-highfive]

The job x86_64-gnu-llvm-6.0 of your PR failed (pretty log, raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

2019-11-27T19:03:05.1877640Z ##[command]git remote add origin https://github.com/rust-lang/rust
2019-11-27T19:03:05.2098403Z ##[command]git config gc.auto 0
2019-11-27T19:03:05.2208410Z ##[command]git config --get-all http.https://github.com/rust-lang/rust.extraheader
2019-11-27T19:03:05.2255635Z ##[command]git config --get-all http.proxy
2019-11-27T19:03:05.9314806Z ##[command]git -c http.extraheader="AUTHORIZATION: basic ***" fetch --force --tags --prune --progress --no-recurse-submodules --depth=2 origin +refs/heads/*:refs/remotes/origin/* +refs/pull/66793/merge:refs/remotes/pull/66793/merge
---
2019-11-27T19:08:56.0809884Z    Compiling serde_json v1.0.40
2019-11-27T19:08:57.7409243Z    Compiling tidy v0.1.0 (/checkout/src/tools/tidy)
2019-11-27T19:09:09.1928309Z     Finished release [optimized] target(s) in 1m 27s
2019-11-27T19:09:09.2020968Z tidy check
2019-11-27T19:09:09.6675806Z tidy error: /checkout/src/test/ui/async-await/issues/issue-66695-static-refs.rs: empty file
2019-11-27T19:09:09.6676163Z tidy error: /checkout/src/test/ui/async-await/issues/issue-66695-static-refs.rs: leading newline
2019-11-27T19:09:11.9530948Z some tidy checks failed
2019-11-27T19:09:11.9532438Z Found 486 error codes
2019-11-27T19:09:11.9532492Z Found 0 error codes with no tests
2019-11-27T19:09:11.9532560Z Done!
2019-11-27T19:09:11.9532560Z Done!
2019-11-27T19:09:11.9532591Z 
2019-11-27T19:09:11.9532617Z 
2019-11-27T19:09:11.9533493Z command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/tidy" "/checkout/src" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "--no-vendor"
2019-11-27T19:09:11.9533620Z 
2019-11-27T19:09:11.9533646Z 
2019-11-27T19:09:11.9546861Z failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
2019-11-27T19:09:11.9547208Z Build completed unsuccessfully in 0:01:31
2019-11-27T19:09:11.9547208Z Build completed unsuccessfully in 0:01:31
2019-11-27T19:09:11.9599788Z == clock drift check ==
2019-11-27T19:09:11.9611106Z   local time: Wed Nov 27 19:09:11 UTC 2019
2019-11-27T19:09:12.5009497Z   network time: Wed, 27 Nov 2019 19:09:12 GMT
2019-11-27T19:09:12.5013699Z == end clock drift check ==
2019-11-27T19:09:13.8969159Z 
2019-11-27T19:09:13.9082422Z ##[error]Bash exited with code '1'.
2019-11-27T19:09:13.9112661Z ##[section]Starting: Checkout
2019-11-27T19:09:13.9114497Z ==============================================================================
2019-11-27T19:09:13.9114569Z Task         : Get sources
2019-11-27T19:09:13.9114615Z Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[matthewjasper]

@bors r=cramertj

[bors]

📌 Commit df625bd has been approved by cramertj