From a3413804f41f6155d6d4ab8a8ff1abf7c424c3a5 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Mon, 10 Mar 2008 21:27:20 +0000 Subject: [PATCH] If the register allocator ran out of registers, just abort for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48175 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/RegAllocLinearScan.cpp | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index d43cc19683c..144f0a7d430 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -685,8 +685,14 @@ void RALinScan::assignRegOrStackSlotAtInterval(LiveInterval* cur) } // All registers must have inf weight. Just grab one! - if (!minReg) + if (!minReg) { + if (active_.size() == 0) { + // FIXME: All the registers are occupied by fixed intervals. + cerr << "Register allocator ran out of registers!\n"; + abort(); + } minReg = *RC->allocation_order_begin(*mf_); + } } DOUT << "\t\tregister with min weight: " -- 2.34.1