================
@@ -208,10 +208,17 @@ bool arm::useAAPCSForMachO(const llvm::Triple &T) {
bool arm::isHardTPSupported(const llvm::Triple &Triple) {
int Ver = getARMSubArchVersionNumber(Triple);
llvm::ARM::ArchKind AK = llvm::ARM::parseArch(Triple.getArchName());
- return Triple.isARM() || AK == llvm::ARM::ArchKind::ARMV6T2 ||
- (Ver >= 7 && AK != llvm::ARM::ArchKind::ARMV8MBaseline);
+ return Triple.isARM() || (Ver >= 7 && AK !=
llvm::ARM::ArchKind::ARMV8MBaseline);
}
+
+// We follow GCC mtp=auto when arch is arm_arch6k and support thumb2
+bool arm::isHardTPAndThumb2(const llvm::Triple &Triple) {
+ llvm::ARM::ArchKind AK = llvm::ARM::parseArch(Triple.getArchName());
+ return Triple.isARM() && AK >= llvm::ARM::ArchKind::ARMV6K && AK !=
llvm::ARM::ArchKind::ARMV8MBaseline;
----------------
Zhenhang1213 wrote:
Thx for advice, I wanted to implement the same check as gcc, which is in the
gcc source code.
```
if (target_thread_pointer == TP_AUTO)
{
if (arm_arch6k && !TARGET_THUMB1)
target_thread_pointer = TP_TPIDRURO;
else
target_thread_pointer = TP_SOFT;
}
```
then the reason I rewrote this interface is that Triple.isARM() includes
architectures lower than ARMV6K, and AK == llvm::ARM::ArchKind::ARMV6T2 is
covered by Triple.isARM()
```
return Triple.isARM() || AK == llvm::ARM::ArchKind::ARMV6T2 ||
(Ver >= 7 && AK != llvm::ARM::ArchKind::ARMV8MBaseline);
```
https://github.com/llvm/llvm-project/pull/130027
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