Teach the Thumb ASM parser that BKPT is allowed in IT blocks, even though it is always executed unconditionally.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139610 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index df5e0c9..08a42f1 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -3532,7 +3532,10 @@
MCInstrDesc &MCID = getInstDesc(Inst.getOpcode());
SMLoc Loc = Operands[0]->getStartLoc();
// Check the IT block state first.
- if (inITBlock()) {
+ // NOTE: In Thumb mode, the BKPT instruction has the interesting property of
+ // being allowed in IT blocks, but not being predicable. It just always
+ // executes.
+ if (inITBlock() && Inst.getOpcode() != ARM::tBKPT) {
unsigned bit = 1;
if (ITState.FirstCond)
ITState.FirstCond = false;