tree 1e4558c5b273e3e1d80ce69f36ad0f859ca4c0ee
parent eaf1c53544a7ffe2c7716246ceb2dce315639733
author Nicolas Capens <capn@google.com> 1604349030 -0500
committer Nicolas Capens <nicolascapens@google.com> 1604354491 +0000

Set the LLVM module's target triple

The target triple is used by MemorySanitizer to determine where to map
the shadow and origin data, which is OS specific. When not set, the
MemorySanitizer::initializeModule() method, which inserts an __msan_init
call to the module's constructor list, produces an
"unsupported operating system" error.

Note that JITs like Reactor have no use for a module constructor list
(__msan_init gets called during executable startup), but there is
currently no way to skip this initialization. Leaving it unused is fine
though. Likewise, setting the target triple has not other known JIT uses
at the moment, but it can't hurt.

Bug: b/155148722
Change-Id: Ia31d8c71ee495aadd91530a8d1c5fdc93add8e01
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/49853
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>