QBE as an easy-to-embed library
https://c9x.me/git/qbe.git
2434d4eb3e
The casting to uint32_t made the code for comparing two signed words invalid. Interestingly, this can be fixed by casting to int32_t instead. Because sign extension is monotonic, all the unsigned comparisons remain valid. CVC4 can even check that for us: x, y : BITVECTOR(32); QUERY BVLT(SX(x, 64), SX(y, 64)) <=> BVLT(x, y); QUERY BVLE(SX(x, 64), SX(y, 64)) <=> BVLE(x, y); QUERY BVGT(SX(x, 64), SX(y, 64)) <=> BVGT(x, y); QUERY BVGE(SX(x, 64), SX(y, 64)) <=> BVGE(x, y); |
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| doc | ||
| minic | ||
| test | ||
| tools | ||
| .gitignore | ||
| .tag | ||
| all.h | ||
| copy.c | ||
| emit.c | ||
| fold.c | ||
| isel.c | ||
| LICENSE | ||
| live.c | ||
| main.c | ||
| Makefile | ||
| mem.c | ||
| parse.c | ||
| README | ||
| rega.c | ||
| spill.c | ||
| ssa.c | ||
| sysv.c | ||
| util.c | ||
QBE - Backend Compiler http://c9x.me/compile/ doc/ Documentation. minic/ An example C frontend for QBE. tools/ Miscellaneous tools (testing). test/ Unit tests. The LICENSE file applies to all files distributed. - Compilation Invoke GNU make in this directory to create the executable file obj/qbe. On some systems (BSD) you might have to use 'gmake' instead of 'make'.