diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/FastISel.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/FastISel.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp index 601691a795a..a88359ff27a 100644 --- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -113,6 +113,13 @@ using namespace llvm; #define DEBUG_TYPE "isel" +// FIXME: Remove this when compile time issues are addressed. Do this by only +// numbering instructions between local value map flush points instead of the +// entire BB. +static cl::opt<bool> SinkLocalValues("fast-isel-sink-local-values", + cl::init(false), cl::Hidden, + cl::desc("Sink local values in FastISel")); + STATISTIC(NumFastIselSuccessIndependent, "Number of insts selected by " "target-independent selector"); STATISTIC(NumFastIselSuccessTarget, "Number of insts selected by " @@ -180,7 +187,7 @@ void FastISel::flushLocalValueMap() { // Try to sink local values down to their first use so that we can give them a // better debug location. This has the side effect of shrinking local value // live ranges, which helps out fast regalloc. - if (LastLocalValue != EmitStartPt) { + if (SinkLocalValues && LastLocalValue != EmitStartPt) { // Sink local value materialization instructions between EmitStartPt and // LastLocalValue. Visit them bottom-up, starting from LastLocalValue, to // avoid inserting into the range that we're iterating over. |
