[Git][ghc/ghc][wip/memory-barriers] Add missing memory barrier

[Ben Gamari]

Ben Gamari pushed to branch wip/memory-barriers at Glasgow Haskell Compiler / GHC


Commits:
8c20ee41 by Ben Gamari at 2019-06-08T17:14:58Z
Add missing memory barrier

- - - - -


1 changed file:

- includes/Cmm.h


Changes:

=====================================
includes/Cmm.h
=====================================
@@ -309,6 +309,8 @@
  again:                                                 \
   W_ info;                                              \
   LOAD_INFO(ret,x)                                      \
+  /* See Note [Heap memory barriers] in SMP.h */        \
+  prim_read_barrier();                                  \
   switch [INVALID_OBJECT .. N_CLOSURE_TYPES]            \
          (TO_W_( %INFO_TYPE(%STD_INFO(info)) )) {       \
   case                                                  \



View it on GitLab: https://gitlab.haskell.org/ghc/ghc/commit/8c20ee414efc23e1b80669521fa229ee39c05e1a

-- 
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/commit/8c20ee414efc23e1b80669521fa229ee39c05e1a
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