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-rw-r--r--lib/Target/ARM/ARMSubtarget.cpp10
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp
index cf1ee3f..5af95c3 100644
--- a/lib/Target/ARM/ARMSubtarget.cpp
+++ b/lib/Target/ARM/ARMSubtarget.cpp
@@ -27,11 +27,11 @@ UseNEONFP("arm-use-neon-fp",
cl::init(false), cl::Hidden);
ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS,
- bool isThumb)
+ bool isT)
: ARMArchVersion(V4T)
, ARMFPUType(None)
, UseNEONForSinglePrecisionFP(UseNEONFP)
- , IsThumb(isThumb)
+ , IsThumb(isT)
, ThumbMode(Thumb1)
, PostRAScheduler(false)
, IsR9Reserved(ReserveR9)
@@ -98,9 +98,13 @@ ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS,
if (isTargetDarwin())
IsR9Reserved = ReserveR9 | (ARMArchVersion < V6);
+ if (!isThumb() || hasThumb2())
+ PostRAScheduler = true;
+
// Set CPU specific features.
if (CPUString == "cortex-a8") {
- PostRAScheduler = true;
+ // On Cortex-a8, it's faster to perform some single-precision FP
+ // operations with NEON instructions.
if (UseNEONFP.getPosition() == 0)
UseNEONForSinglePrecisionFP = true;
}
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