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| author | Daniel Micay <danielmicay@gmail.com> | 2013-10-02 07:51:39 -0400 |
|---|---|---|
| committer | Daniel Micay <danielmicay@gmail.com> | 2013-10-02 10:02:52 -0400 |
| commit | f2932e46614ab0f91f7dfd064cadf1e3db2a9667 (patch) | |
| tree | 8761c525ec6903be085f8d03fc678baf81d68b67 /src/rt/sync/rust_thread.cpp | |
| parent | abe648d60854c7dbbc0c9db5f29111268c66961d (diff) | |
| download | rust-f2932e46614ab0f91f7dfd064cadf1e3db2a9667.tar.gz rust-f2932e46614ab0f91f7dfd064cadf1e3db2a9667.zip | |
make small (<= size_of::<int>()) enums immediate
C-like enums are excluded from this for now, because the code paths
specific to them need to be changed.
fn foo() -> Option<~int> { Some(~5) }
Before:
; Function Attrs: uwtable
define void @_ZN3foo18hdec6e36682b87eeaf4v0.0E(%"enum.std::option::Option<~int>[#1]"* noalias nocapture sret, { i64, %tydesc*, i8*, i8*, i8 }* nocapture readnone) #0 {
"function top level":
%2 = tail call %"enum.std::libc::types::common::c95::c_void[#1]"* @"_ZN2rt11global_heap10malloc_raw17h56c543b77f9b78aY11v0.9$x2dpreE"({ i64, %tydesc*, i8*, i8*, i8 }* undef, i64 8)
%3 = bitcast %"enum.std::libc::types::common::c95::c_void[#1]"* %2 to i64*
store i64 5, i64* %3, align 8
%4 = getelementptr inbounds %"enum.std::option::Option<~int>[#1]"* %0, i64 0, i32 0
store i64* %3, i64** %4, align 8
ret void
}
After:
; Function Attrs: uwtable
define %"enum.std::option::Option<~int>[#1]" @_ZN3foo18h2cbf6557a3143edah4v0.0E({ i64, %tydesc*, i8*, i8*, i8 }* nocapture readnone) #0 {
"function top level":
%1 = tail call %"enum.std::libc::types::common::c95::c_void[#1]"* @"_ZN2rt11global_heap10malloc_raw18hb1e9dd1beab35edau11v0.9$x2dpreE"({ i64, %tydesc*, i8*, i8*, i8 }* undef, i64 8)
%2 = bitcast %"enum.std::libc::types::common::c95::c_void[#1]"* %1 to i64*
store i64 5, i64* %2, align 8
%oldret = insertvalue %"enum.std::option::Option<~int>[#1]" undef, i64* %2, 0
ret %"enum.std::option::Option<~int>[#1]" %oldret
}
Diffstat (limited to 'src/rt/sync/rust_thread.cpp')
0 files changed, 0 insertions, 0 deletions