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| author | Sam Clegg <sbc@chromium.org> | 2017-06-16 23:59:10 +0000 |
|---|---|---|
| committer | Sam Clegg <sbc@chromium.org> | 2017-06-16 23:59:10 +0000 |
| commit | 9d24fb7ff318d7a88f0fa3e63eb0df4acafd9805 (patch) | |
| tree | 831fda1fcb2d777624a62553479acb958f043e43 /llvm/test/MC/WebAssembly | |
| parent | 4f1fca270acd736cbde43773d1fd83b3b3d2164f (diff) | |
| download | bcm5719-llvm-9d24fb7ff318d7a88f0fa3e63eb0df4acafd9805.tar.gz bcm5719-llvm-9d24fb7ff318d7a88f0fa3e63eb0df4acafd9805.zip | |
[WebAssembly] Use __stack_pointer global when writing wasm binary
This ensures that symbolic relocations are generated for stack
pointer manipulations.
These relocations are of type R_WEBASSEMBLY_GLOBAL_INDEX_LEB.
This change also adds support for reading relocations of this
type in WasmObjectFile.cpp.
Since its a globally imported symbol this does mean that
the get_global/set_global instruction won't be valid until
the objects are linked that global used in no longer an
imported global.
Differential Revision: https://reviews.llvm.org/D34172
llvm-svn: 305616
Diffstat (limited to 'llvm/test/MC/WebAssembly')
| -rw-r--r-- | llvm/test/MC/WebAssembly/func-address.ll | 5 | ||||
| -rw-r--r-- | llvm/test/MC/WebAssembly/stack-ptr.ll | 21 |
2 files changed, 23 insertions, 3 deletions
diff --git a/llvm/test/MC/WebAssembly/func-address.ll b/llvm/test/MC/WebAssembly/func-address.ll index c0a9d9a801f..15c09e0ebd8 100644 --- a/llvm/test/MC/WebAssembly/func-address.ll +++ b/llvm/test/MC/WebAssembly/func-address.ll @@ -25,11 +25,10 @@ entry: ; CHECK: Section { ; CHECK: Type: ELEM (0x9) ; CHECK: Size: 7 -; CHECK: Offset: 165 ; CHECK: } ; CHECK: Relocations [ -; CHECK: Section (9) CODE { +; CHECK: Section (8) CODE { ; CHECK: Relocation { ; CHECK: Type: R_WEBASSEMBLY_FUNCTION_INDEX_LEB (0) ; CHECK: Offset: 0x4 @@ -42,7 +41,7 @@ entry: ; CHECK: } ; CHECK: Relocation { ; CHECK: Type: R_WEBASSEMBLY_TABLE_INDEX_SLEB (1) -; CHECK: Offset: 0x1A +; CHECK: Offset: 0x1E ; CHECK: Index: 0x0 ; CHECK: } ; CHECK: } diff --git a/llvm/test/MC/WebAssembly/stack-ptr.ll b/llvm/test/MC/WebAssembly/stack-ptr.ll new file mode 100644 index 00000000000..98d1311e154 --- /dev/null +++ b/llvm/test/MC/WebAssembly/stack-ptr.ll @@ -0,0 +1,21 @@ +; RUN: llc -mtriple wasm32-unknown-unknown-wasm -filetype=obj %s -o - | obj2yaml | FileCheck %s + +; Function that uses explict stack, and should generate a reference to +; __stack_pointer, along with the corresponding reloction entry. +define hidden void @foo() #0 { +entry: + alloca i32, align 4 + ret void +} + +; CHECK: - Type: IMPORT +; CHECK: Imports: +; CHECK: - Module: env +; CHECK: Field: __stack_pointer +; CHECK: Kind: GLOBAL +; CHECK: GlobalType: I32 +; CHECK: GlobalMutable: false +; CHECK: - Type: CODE +; CHECK: Relocations: +; CHECK: - Type: R_WEBASSEMBLY_GLOBAL_INDEX_LEB +; CHECK: Index: 0 |
