forked from OSchip/llvm-project
64bef13f08
If a G_SHL is fed by a G_CONSTANT, the lower and upper bits of the source can be shifted individually by the constant shift amount. However in case the shift amount came from a G_TRUNC(G_CONSTANT), the generic shift legalization code was used, producing intermediate shifts that are potentially illegal on some targets. This change teaches narrowScalarShift to look through G_TRUNCs and G_*EXTs. Reviewed By: paquette Differential Revision: https://reviews.llvm.org/D89100 |
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| .. | ||
| CMakeLists.txt | ||
| CSETest.cpp | ||
| ConstantFoldingTest.cpp | ||
| GISelMITest.cpp | ||
| GISelMITest.h | ||
| GISelUtilsTest.cpp | ||
| KnownBitsTest.cpp | ||
| KnownBitsVectorTest.cpp | ||
| LegalizerHelperTest.cpp | ||
| LegalizerInfoTest.cpp | ||
| LegalizerTest.cpp | ||
| MachineIRBuilderTest.cpp | ||
| PatternMatchTest.cpp | ||