[compiler-rt] [llvm] [msan] Add 32-bit platforms support (PR #109284)

[Vitaly Buka via llvm-commits]

================
@@ -0,0 +1,91 @@
+; RUN: opt < %s -S -passes=msan 2>&1 -msan-origin-base=0x40000000 -msan-and-mask=0x80000000 | FileCheck %s
+
+target datalayout = "E-m:m-i8:8:32-i16:16:32-i32:32-n32-S64"
+target triple = "arm--linux"
+
+define i32 @foo(i32 %guard, ...) {
----------------
vitalybuka wrote:

Assuming this one was copied from something else, 
I suggest this sequence of pull requests:
1. Move/copy files unchanged
2. switch "target tripple" to 32bit and update tests with invalid instrumentation (this step only if compiled does not crash or fail on assert)
3. This PR #109284
 a PR with moving copying files unchanged, and in the current PR "target triple"

https://github.com/llvm/llvm-project/pull/109284