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case when the lookup table doesn't have any holes. This means we can build a lookup table for switches like this: switch (x) { case 0: return 1; case 1: return 2; case 2: return 3; case 3: return 4; default: exit(1); } The default case doesn't yield a constant result here, but that doesn't matter, since a default result is only necessary for filling holes in the lookup table, and this table doesn't have any holes. This makes us transform 505 more switches in a clang bootstrap, and shaves 164 KB off the resulting clang binary. llvm-svn: 199025 |
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Hello | ||
InstCombine | ||
Instrumentation | ||
IPO | ||
ObjCARC | ||
Scalar | ||
Utils | ||
Vectorize | ||
CMakeLists.txt | ||
LLVMBuild.txt | ||
Makefile |