serge-sans-paille 0f60bcc36c [stack-clash] Fix probing of dynamic alloca ...

- Perform the probing in the correct direction.
  Related to https://github.com/rust-lang/rust/pull/77885#issuecomment-711062924

- The first touch on a dynamic alloca cannot use a mov because it clobbers
  existing space. Use a xor 0 instead

Differential Revision: https://reviews.llvm.org/D90216

2020-10-30 15:34:00 +01:00

4.4 KiB

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