[Hexagon] Add a debug option to disable all backend optimizations
llvm-svn: 269192
diff --git a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
index 001215e..bf1213f 100644
--- a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -77,6 +77,9 @@
static cl::opt<bool> EnableLoopResched("hexagon-loop-resched", cl::init(true),
cl::Hidden, cl::desc("Loop rescheduling"));
+static cl::opt<bool> HexagonNoOpt("hexagon-noopt", cl::init(false),
+ cl::Hidden, cl::desc("Disable backend optimizations"));
+
/// HexagonTargetMachineModule - Note that this is used on hosts that
/// cannot link in a library unless there are references into the
/// library. In particular, it seems that it is not possible to get
@@ -139,7 +142,7 @@
: LLVMTargetMachine(T, "e-m:e-p:32:32:32-a:0-n16:32-"
"i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-"
"v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048",
- TT, CPU, FS, Options, RM, CM, OL),
+ TT, CPU, FS, Options, RM, CM, (HexagonNoOpt ? CodeGenOpt::None : OL)),
TLOF(make_unique<HexagonTargetObjectFile>()) {
initAsmInfo();
}