From 17f54d0f42ace3e9b331f5c8bd265483e3308bfc Mon Sep 17 00:00:00 2001 From: Eric Christopher Date: Tue, 15 Sep 2009 21:56:46 +0000 Subject: [PATCH] Expand on comment. llvm-svn: 81928 --- llvm/lib/CodeGen/DwarfEHPrepare.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/llvm/lib/CodeGen/DwarfEHPrepare.cpp b/llvm/lib/CodeGen/DwarfEHPrepare.cpp index be6205e174a3..8dc7e86fd211 100644 --- a/llvm/lib/CodeGen/DwarfEHPrepare.cpp +++ b/llvm/lib/CodeGen/DwarfEHPrepare.cpp @@ -107,7 +107,9 @@ FunctionPass *llvm::createDwarfEHPass(const TargetLowering *tli, bool fast) { /// NormalizeLandingPads - Normalize and discover landing pads, noting them /// in the LandingPads set. A landing pad is normal if the only CFG edges -/// that end at it are unwind edges from invoke instructions. +/// that end at it are unwind edges from invoke instructions. If we inlined +/// through an invoke we could have a normal branch from the previous +/// unwind block through to the landing pad for the original invoke. /// Abnormal landing pads are fixed up by redirecting all unwind edges to /// a new basic block which falls through to the original. bool DwarfEHPrepare::NormalizeLandingPads() { @@ -132,6 +134,7 @@ bool DwarfEHPrepare::NormalizeLandingPads() { break; } } + if (OnlyUnwoundTo) { // Only unwind edges lead to the landing pad. Remember the landing pad. LandingPads.insert(LPad);