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from 35b05a20338 [AMDGPU] Fixed MSVC build break new 8a7f23753e3 Add some tests for cast+clamp/min/max before D33186. new 406ae0691e5 [InstCombine] Canonicalize clamp of float types to minmax i [...] new f27bcb0a8e7 [DSE] Merge stores when the later store only writes to memo [...]
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Summary of changes: include/llvm/IR/PatternMatch.h | 24 +++ lib/Analysis/ValueTracking.cpp | 69 ++++++- lib/Transforms/InstCombine/InstCombineSelect.cpp | 24 ++- lib/Transforms/Scalar/DeadStoreElimination.cpp | 103 ++++++++++- .../DeadStoreElimination/PartialStore.ll | 2 +- .../combined-partial-overwrites.ll | 2 +- .../merge-stores-big-endian.ll | 173 +++++++++++++++++ .../DeadStoreElimination/merge-stores.ll | 205 +++++++++++++++++++++ test/Transforms/InstCombine/clamp-to-minmax.ll | 161 +++++++++++++--- test/Transforms/InstCombine/minmax-fold.ll | 179 ++++++++++-------- test/Transforms/InstCombine/pr27236.ll | 19 +- 11 files changed, 833 insertions(+), 128 deletions(-) create mode 100644 test/Transforms/DeadStoreElimination/merge-stores-big-endian.ll create mode 100644 test/Transforms/DeadStoreElimination/merge-stores.ll