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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 | 5204f7611f4ad6549921f9fa757823e77f39ce32 (patch) | |
| tree | ef7917abad381f28851224e8fb5bf81db74902d5 /clang/test/CodeGen/builtins-wasm.c | |
| parent | 604f802fd30d60226fca7d808b7e513e7f80c603 (diff) | |
| download | bcm5719-llvm-5204f7611f4ad6549921f9fa757823e77f39ce32.tar.gz bcm5719-llvm-5204f7611f4ad6549921f9fa757823e77f39ce32.zip | |
[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
llvm-svn: 366624
Diffstat (limited to 'clang/test/CodeGen/builtins-wasm.c')
| -rw-r--r-- | clang/test/CodeGen/builtins-wasm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/clang/test/CodeGen/builtins-wasm.c b/clang/test/CodeGen/builtins-wasm.c index 8f8e7a9e4d0..f3129b787ac 100644 --- a/clang/test/CodeGen/builtins-wasm.c +++ b/clang/test/CodeGen/builtins-wasm.c @@ -44,6 +44,12 @@ __SIZE_TYPE__ tls_size() { // WEBASSEMBLY64: call i64 @llvm.wasm.tls.size.i64() } +__SIZE_TYPE__ tls_align() { + return __builtin_wasm_tls_align(); + // WEBASSEMBLY32: call i32 @llvm.wasm.tls.align.i32() + // WEBASSEMBLY64: call i64 @llvm.wasm.tls.align.i64() +} + void *tls_base() { return __builtin_wasm_tls_base(); // WEBASSEMBLY: call i8* @llvm.wasm.tls.base() |
