Displaying 2 results from an estimated 2 matches for "largevalu".
Did you mean:
largevalue
2019 Sep 27
3
DenseMap/ValueMap: is M[New]=M[Old] valid ?
...of the map is something larger than just a pointer, the
emitted IR looks like this instead:
define void @_Z4copyPvS_(i8*, i8*) #1 {
%3 = alloca i8*, align 8
%4 = alloca i8*, align 8
store i8* %0, i8** %3, align 8
store i8* %1, i8** %4, align 8
%5 = call dereferenceable(800) %struct.LargeValue* @_ZN4llvm12DenseMapBaseINS_8DenseMapIPv10LargeValueNS_12DenseMapInfoIS2_EENS_6detail12DenseMapPairIS2_S3_EEEES2_S3_S5_S8_EixERKS2_(%"class.llvm::DenseMapBase"* getelementptr inbounds (%"class.llvm::DenseMap", %"class.llvm::DenseMap"* @GlobalMap, i32 0, i32 0), i8** d...
2019 Sep 27
2
DenseMap/ValueMap: is M[New]=M[Old] valid ?
I actually ran into an elusive bug with this exact same issue some time
ago as well, see https://bugs.llvm.org/show_bug.cgi?id=42065 and
https://reviews.llvm.org/D62624.
The strange thing about that bug was that it only showed up if built with
GCC; Clang dereferenced the right hand side reference before evaluating
the left hand side, as long as the value type was as small as the
reference