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Add an assertion to catch register of illegal class.
author
Evan Cheng
<evan.cheng@apple.com>
Mon, 24 Mar 2008 23:28:21 +0000
(23:28 +0000)
committer
Evan Cheng
<evan.cheng@apple.com>
Mon, 24 Mar 2008 23:28:21 +0000
(23:28 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48751
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/RegAllocLinearScan.cpp
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diff --git
a/lib/CodeGen/RegAllocLinearScan.cpp
b/lib/CodeGen/RegAllocLinearScan.cpp
index
2713771
..
6925de3
100644
(file)
--- a/
lib/CodeGen/RegAllocLinearScan.cpp
+++ b/
lib/CodeGen/RegAllocLinearScan.cpp
@@
-886,6
+886,7
@@
unsigned RALinScan::getFreePhysReg(LiveInterval *cur) {
// Scan for the first available register.
TargetRegisterClass::iterator I = RC->allocation_order_begin(*mf_);
TargetRegisterClass::iterator E = RC->allocation_order_end(*mf_);
+ assert(I != E && "No allocatable register in this register class!");
for (; I != E; ++I)
if (prt_->isRegAvail(*I)) {
FreeReg = *I;