diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2016-01-13 19:58:01 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2016-01-13 19:58:01 +0000 |
| commit | 050e163ae8b4bb6eb252b59e2f8f36e68ae9239d (patch) | |
| tree | 7376a0c71aad05d327e5b1dcbceb3311a10f9f29 /lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp | |
| parent | 8a6c1c25bce0267ee4072bd7b786b921e8a66a35 (diff) | |
Notes
Diffstat (limited to 'lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp')
| -rw-r--r-- | lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp b/lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp index 5e7663cdb506..028e9af0834f 100644 --- a/lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp +++ b/lib/Target/WebAssembly/WebAssemblyInstrInfo.cpp @@ -74,6 +74,9 @@ bool WebAssemblyInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, case WebAssembly::BR_IF: if (HaveCond) return true; + // If we're running after CFGStackify, we can't optimize further. + if (!MI.getOperand(1).isMBB()) + return true; Cond.push_back(MachineOperand::CreateImm(true)); Cond.push_back(MI.getOperand(0)); TBB = MI.getOperand(1).getMBB(); @@ -82,12 +85,18 @@ bool WebAssemblyInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, case WebAssembly::BR_UNLESS: if (HaveCond) return true; + // If we're running after CFGStackify, we can't optimize further. + if (!MI.getOperand(1).isMBB()) + return true; Cond.push_back(MachineOperand::CreateImm(false)); Cond.push_back(MI.getOperand(0)); TBB = MI.getOperand(1).getMBB(); HaveCond = true; break; case WebAssembly::BR: + // If we're running after CFGStackify, we can't optimize further. + if (!MI.getOperand(0).isMBB()) + return true; if (!HaveCond) TBB = MI.getOperand(0).getMBB(); else |