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| author | bors <bors@rust-lang.org> | 2016-05-26 02:52:49 -0700 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2016-05-26 02:52:49 -0700 |
| commit | 3c795e08d6f4a532f12f3f8e1837db5e0647f8b0 (patch) | |
| tree | 5d1cf1555506d6a4c8d3ab1ebbb43b092103848b /src/libsyntax/errors | |
| parent | d5759a3417fa395d439f4283825504dd4f78dc87 (diff) | |
| parent | 5b404523dd1741681ba411c48c3df3c4cf5b22ab (diff) | |
| download | rust-3c795e08d6f4a532f12f3f8e1837db5e0647f8b0.tar.gz rust-3c795e08d6f4a532f12f3f8e1837db5e0647f8b0.zip | |
Auto merge of #33872 - nagisa:undef-is-llvm-for-sigsegv, r=eddyb
Fix handling of FFI arguments
r? @eddyb @nikomatsakis or whoever else.
cc @alexcrichton @rust-lang/core
The strategy employed here was to essentially change code we generate from
```llvm
%s = alloca %S ; potentially smaller than argument, but never larger
%1 = bitcast %S* %s to { i64, i64 }*
store { i64, i64 } %0, { i64, i64 }* %1, align 4
```
to
```llvm
%1 = alloca { i64, i64 } ; the copy of argument itself
store { i64, i64 } %0, { i64, i64 }* %1, align 4
%s = bitcast { i64, i64 }* %1 to %S* ; potentially truncate by casting to a pointer of smaller type.
```
Diffstat (limited to 'src/libsyntax/errors')
0 files changed, 0 insertions, 0 deletions