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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2014-07-15 01:55:03 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2014-07-15 01:55:03 +0000 |
| commit | f1a7e6203316ef6f84977ce60075a84a47e6f28d (patch) | |
| tree | 5931a6783d765238e6b267b0ae389f1bd926c273 /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | 138551bb15f2a67cc498546a08df3103fea36924 (diff) | |
| download | llvm-f1a7e6203316ef6f84977ce60075a84a47e6f28d.zip llvm-f1a7e6203316ef6f84977ce60075a84a47e6f28d.tar.gz llvm-f1a7e6203316ef6f84977ce60075a84a47e6f28d.tar.bz2 | |
Teach computeKnownBits to look through addrspacecast.
This fixes inferring alignment through an addrspacecast.
llvm-svn: 213030
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index bfdc349..cedf076 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -29,6 +29,7 @@ #include "llvm/IR/Metadata.h" #include "llvm/IR/Operator.h" #include "llvm/IR/PatternMatch.h" +#include "llvm/Support/Debug.h" #include "llvm/Support/MathExtras.h" #include <cstring> using namespace llvm; @@ -415,6 +416,7 @@ void llvm::computeKnownBits(Value *V, APInt &KnownZero, APInt &KnownOne, break; // Can't work with floating point. case Instruction::PtrToInt: case Instruction::IntToPtr: + case Instruction::AddrSpaceCast: // Pointers could be different sizes. // We can't handle these if we don't know the pointer size. if (!TD) break; // FALL THROUGH and handle them the same as zext/trunc. |