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authorLuc Van Oostenryck <luc.vanoostenryck@gmail.com>2019-12-05 23:41:47 +0100
committerLuc Van Oostenryck <luc.vanoostenryck@gmail.com>2019-12-10 23:26:23 +0100
commit5d02fb958506ba44d85b449bef68883c68d6ecfa (patch)
tree8abfeab6e1d54690e23b89c86a1745670bf54a82 /sset.h
parent706254f20d357735884c5e7b78c03d49bcad9cd3 (diff)
downloadsparse-dev-5d02fb958506ba44d85b449bef68883c68d6ecfa.tar.gz
fix simplify_loads() when doing type punning
When doing loads simplification for a location where floats & integers are mixed, loads are systematically replaced with the value of their dominating memop (this checks if the corresponding write or load overlaps). However, this must not be done if the involved operations are doing some form of integer/float type punning. Fix this by refusing to convert load of an integer by a previous float value or the opposite. Note: another way to describe this problem would be to say that floats need to have their own memory operations: OP_FSTORE & OP_FLOAD or that instructions need to have some form of 'machine type' in addition of the size (like clang's i32/f32, ...). Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Diffstat (limited to 'sset.h')
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