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| author | Guanzhong Chen <gzchen@google.com> | 2019-07-19 23:34:16 +0000 |
|---|---|---|
| committer | Guanzhong Chen <gzchen@google.com> | 2019-07-19 23:34:16 +0000 |
| commit | d220fc8c89e6db8709dfc34b5e44e1507ecd09c6 (patch) | |
| tree | cec78fe1ece43ffd3175d4fd682856d419f9103d /lib/CodeGen/CGBuiltin.cpp | |
| parent | cae1c5abb08888dd222cbf3a2964bec14073a357 (diff) | |
| download | clang-d220fc8c89e6db8709dfc34b5e44e1507ecd09c6.tar.gz | |
[WebAssembly] Compute and export TLS block alignment
Summary:
Add immutable WASM global `__tls_align` which stores the alignment
requirements of the TLS segment.
Add `__builtin_wasm_tls_align()` intrinsic to get this alignment in Clang.
The expected usage has now changed to:
__wasm_init_tls(memalign(__builtin_wasm_tls_align(),
__builtin_wasm_tls_size()));
Reviewers: tlively, aheejin, sbc100, sunfish, alexcrichton
Reviewed By: tlively
Subscribers: dschuff, jgravelle-google, hiraditya, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D65028
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@366624 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | lib/CodeGen/CGBuiltin.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp index 8c7411fc30..dee1e207ef 100644 --- a/lib/CodeGen/CGBuiltin.cpp +++ b/lib/CodeGen/CGBuiltin.cpp @@ -13924,6 +13924,11 @@ Value *CodeGenFunction::EmitWebAssemblyBuiltinExpr(unsigned BuiltinID, Function *Callee = CGM.getIntrinsic(Intrinsic::wasm_tls_size, ResultType); return Builder.CreateCall(Callee); } + case WebAssembly::BI__builtin_wasm_tls_align: { + llvm::Type *ResultType = ConvertType(E->getType()); + Function *Callee = CGM.getIntrinsic(Intrinsic::wasm_tls_align, ResultType); + return Builder.CreateCall(Callee); + } case WebAssembly::BI__builtin_wasm_tls_base: { Function *Callee = CGM.getIntrinsic(Intrinsic::wasm_tls_base); return Builder.CreateCall(Callee); |