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-rw-r--r--llvm/lib/Target/ARM/ARM.td4
-rw-r--r--llvm/lib/Target/ARM/ARMSubtarget.cpp12
-rw-r--r--llvm/lib/Target/ARM/ARMSubtarget.h6
3 files changed, 11 insertions, 11 deletions
diff --git a/llvm/lib/Target/ARM/ARM.td b/llvm/lib/Target/ARM/ARM.td
index ef609a66d03..1dafff60921 100644
--- a/llvm/lib/Target/ARM/ARM.td
+++ b/llvm/lib/Target/ARM/ARM.td
@@ -154,6 +154,10 @@ def FeatureLongCalls : SubtargetFeature<"long-calls", "GenLongCalls", "true",
"Generate calls via indirect call "
"instructions">;
+def FeatureNoMovt : SubtargetFeature<"no-movt", "NoMovt", "true",
+ "Don't use movt/movw pairs for 32-bit "
+ "imms">;
+
// ARM ISAs.
def HasV4TOps : SubtargetFeature<"v4t", "HasV4TOps", "true",
"Support ARM v4T instructions">;
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.cpp b/llvm/lib/Target/ARM/ARMSubtarget.cpp
index 002c3e9b629..31b65f2bfec 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.cpp
+++ b/llvm/lib/Target/ARM/ARMSubtarget.cpp
@@ -44,9 +44,6 @@ ReserveR9("arm-reserve-r9", cl::Hidden,
cl::desc("Reserve R9, making it unavailable as GPR"));
static cl::opt<bool>
-ArmUseMOVT("arm-use-movt", cl::init(true), cl::Hidden);
-
-static cl::opt<bool>
UseFusedMulOps("arm-use-mulops",
cl::init(true), cl::Hidden);
@@ -148,7 +145,7 @@ void ARMSubtarget::initializeEnvironment() {
HasThumb2 = false;
NoARM = false;
IsR9Reserved = ReserveR9;
- UseMovt = false;
+ NoMovt = false;
SupportsTailCall = false;
HasFP16 = false;
HasD16 = false;
@@ -215,8 +212,6 @@ void ARMSubtarget::initSubtargetFeatures(StringRef CPU, StringRef FS) {
if (isTargetNaCl())
stackAlignment = 16;
- UseMovt = hasV6T2Ops() && ArmUseMOVT;
-
if (isTargetMachO()) {
IsR9Reserved = ReserveR9 || !HasV6Ops;
SupportsTailCall = !isTargetIOS() || !getTargetTriple().isOSVersionLT(5, 0);
@@ -337,8 +332,9 @@ bool ARMSubtarget::useMovt(const MachineFunction &MF) const {
// NOTE Windows on ARM needs to use mov.w/mov.t pairs to materialise 32-bit
// immediates as it is inherently position independent, and may be out of
// range otherwise.
- return UseMovt && (isTargetWindows() ||
- !MF.getFunction()->hasFnAttribute(Attribute::MinSize));
+ return !NoMovt && hasV6T2Ops() &&
+ (isTargetWindows() ||
+ !MF.getFunction()->hasFnAttribute(Attribute::MinSize));
}
bool ARMSubtarget::useFastISel() const {
diff --git a/llvm/lib/Target/ARM/ARMSubtarget.h b/llvm/lib/Target/ARM/ARMSubtarget.h
index dd101df9b63..75425890a28 100644
--- a/llvm/lib/Target/ARM/ARMSubtarget.h
+++ b/llvm/lib/Target/ARM/ARMSubtarget.h
@@ -112,9 +112,9 @@ protected:
/// IsR9Reserved - True if R9 is a not available as general purpose register.
bool IsR9Reserved;
- /// UseMovt - True if MOVT / MOVW pairs are used for materialization of 32-bit
- /// imms (including global addresses).
- bool UseMovt;
+ /// NoMovt - True if MOVT / MOVW pairs are not used for materialization of
+ /// 32-bit imms (including global addresses).
+ bool NoMovt;
/// SupportsTailCall - True if the OS supports tail call. The dynamic linker
/// must be able to synthesize call stubs for interworking between ARM and
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