diff options
| author | Tom Stellard <tstellar@redhat.com> | 2018-04-09 20:45:48 +0000 |
|---|---|---|
| committer | Tom Stellard <tstellar@redhat.com> | 2018-04-09 20:45:48 +0000 |
| commit | 48e90723eaeaca411c2d9893a1cc44ef5fae109d (patch) | |
| tree | 36b084c9202be2133a3946489c86a77b0393cffd /include/llvm | |
| parent | a7769cbdb107428ce7bab197ec65aa96aa127020 (diff) | |
Merging r322319:
------------------------------------------------------------------------
r322319 | matze | 2018-01-11 14:30:43 -0800 (Thu, 11 Jan 2018) | 7 lines
PeepholeOptimizer: Fix for vregs without defs
The PeepholeOptimizer would fail for vregs without a definition. If this
was caused by an undef operand abort to keep the code simple (so we
don't need to add logic everywhere to replicate the undef flag).
Differential Revision: https://reviews.llvm.org/D40763
------------------------------------------------------------------------
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_60@329619 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm')
| -rw-r--r-- | include/llvm/CodeGen/TargetInstrInfo.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/llvm/CodeGen/TargetInstrInfo.h b/include/llvm/CodeGen/TargetInstrInfo.h index 6b5404be35d..57dee3bb44b 100644 --- a/include/llvm/CodeGen/TargetInstrInfo.h +++ b/include/llvm/CodeGen/TargetInstrInfo.h @@ -421,7 +421,8 @@ public: /// Build the equivalent inputs of a REG_SEQUENCE for the given \p MI /// and \p DefIdx. /// \p [out] InputRegs of the equivalent REG_SEQUENCE. Each element of - /// the list is modeled as <Reg:SubReg, SubIdx>. + /// the list is modeled as <Reg:SubReg, SubIdx>. Operands with the undef + /// flag are not added to this list. /// E.g., REG_SEQUENCE %1:sub1, sub0, %2, sub1 would produce /// two elements: /// - %1:sub1, sub0 @@ -446,7 +447,8 @@ public: /// - %1:sub1, sub0 /// /// \returns true if it is possible to build such an input sequence - /// with the pair \p MI, \p DefIdx. False otherwise. + /// with the pair \p MI, \p DefIdx and the operand has no undef flag set. + /// False otherwise. /// /// \pre MI.isExtractSubreg() or MI.isExtractSubregLike(). /// @@ -465,7 +467,8 @@ public: /// - InsertedReg: %1:sub1, sub3 /// /// \returns true if it is possible to build such an input sequence - /// with the pair \p MI, \p DefIdx. False otherwise. + /// with the pair \p MI, \p DefIdx and the operand has no undef flag set. + /// False otherwise. /// /// \pre MI.isInsertSubreg() or MI.isInsertSubregLike(). /// |