diff options
Diffstat (limited to 'lib/Transforms/NaCl/PNaClABISimplify.cpp')
| -rw-r--r-- | lib/Transforms/NaCl/PNaClABISimplify.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Transforms/NaCl/PNaClABISimplify.cpp b/lib/Transforms/NaCl/PNaClABISimplify.cpp index 4f8e0e4f87..f662ada99a 100644 --- a/lib/Transforms/NaCl/PNaClABISimplify.cpp +++ b/lib/Transforms/NaCl/PNaClABISimplify.cpp @@ -30,10 +30,8 @@ void llvm::PNaClABISimplifyAddPreOptPasses(PassManager &PM) { // LowerExpect converts Intrinsic::expect into branch weights, // which can then be removed after BlockPlacement. PM.add(createLowerExpectIntrinsicPass()); - // Rewrite unsupported intrinsics and inline assembly directives to - // simpler and portable constructs. + // Rewrite unsupported intrinsics to simpler and portable constructs. PM.add(createRewriteLLVMIntrinsicsPass()); - PM.add(createRewriteAsmDirectivesPass()); // LowerInvoke prevents use of C++ exception handling, which is not // yet supported in the PNaCl ABI. PM.add(createLowerInvokePass()); @@ -98,6 +96,10 @@ void llvm::PNaClABISimplifyAddPostOptPasses(PassManager &PM) { PM.add(createExpandGetElementPtrPass()); // Rewrite atomic and volatile instructions with intrinsic calls. PM.add(createRewriteAtomicsPass()); + // Remove ``asm("":::"memory")``. This must occur after rewriting + // atomics: a ``fence seq_cst`` surrounded by ``asm("":::"memory")`` + // has special meaning and is translated differently. + PM.add(createRemoveAsmMemoryPass()); // ReplacePtrsWithInts assumes that getelementptr instructions and // ConstantExprs have already been expanded out. PM.add(createReplacePtrsWithIntsPass()); |