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| author | Dimitry Andric <dim@FreeBSD.org> | 2022-08-13 15:37:04 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2023-04-09 14:54:49 +0000 |
| commit | a2e927433f9d66b477247c4d36da79c008cfa8a4 (patch) | |
| tree | 7b42766cfbd1873929e65b114ee02ae26528ecdb /contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp | |
| parent | 74093eb27f687d9f89d8db457e410aec1cd71b6b (diff) | |
| download | src-a2e927433f9d66b477247c4d36da79c008cfa8a4.tar.gz src-a2e927433f9d66b477247c4d36da79c008cfa8a4.zip | |
Merge llvm-project release/15.x llvmorg-15.0.0-rc2-40-gfbd2950d8d0d
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15.0.0-rc2-40-gfbd2950d8d0d.
PR: 265425
MFC after: 2 weeks
(cherry picked from commit 61cfbce3347e4372143bcabf7b197577b9f3958a)
Diffstat (limited to 'contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp index fc0a983f6542..5d9bd2f67558 100644 --- a/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp +++ b/contrib/llvm-project/llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp @@ -1022,16 +1022,10 @@ void RISCVInsertVSETVLI::transferBefore(VSETVLIInfo &Info, const MachineInstr &M return; } - // Two cases involving an AVL resulting from a previous vsetvli. - // 1) If the AVL is the result of a previous vsetvli which has the - // same AVL and VLMAX as our current state, we can reuse the AVL - // from the current state for the new one. This allows us to - // generate 'vsetvli x0, x0, vtype" or possible skip the transition - // entirely. - // 2) If AVL is defined by a vsetvli with the same VLMAX, we can - // replace the AVL operand with the AVL of the defining vsetvli. - // We avoid general register AVLs to avoid extending live ranges - // without being sure we can kill the original source reg entirely. + // If AVL is defined by a vsetvli with the same VLMAX, we can + // replace the AVL operand with the AVL of the defining vsetvli. + // We avoid general register AVLs to avoid extending live ranges + // without being sure we can kill the original source reg entirely. if (!Info.hasAVLReg() || !Info.getAVLReg().isVirtual()) return; MachineInstr *DefMI = MRI->getVRegDef(Info.getAVLReg()); @@ -1039,17 +1033,6 @@ void RISCVInsertVSETVLI::transferBefore(VSETVLIInfo &Info, const MachineInstr &M return; VSETVLIInfo DefInfo = getInfoForVSETVLI(*DefMI); - // case 1 - if (PrevInfo.isValid() && !PrevInfo.isUnknown() && - DefInfo.hasSameAVL(PrevInfo) && - DefInfo.hasSameVLMAX(PrevInfo)) { - if (PrevInfo.hasAVLImm()) - Info.setAVLImm(PrevInfo.getAVLImm()); - else - Info.setAVLReg(PrevInfo.getAVLReg()); - return; - } - // case 2 if (DefInfo.hasSameVLMAX(Info) && (DefInfo.hasAVLImm() || DefInfo.getAVLReg() == RISCV::X0)) { if (DefInfo.hasAVLImm()) |