Displaying 2 results from an estimated 2 matches for "6e9a5c9".
2013 Nov 23
0
[LLVMdev] [PATCH] Detect Haswell subarchitecture (i.e. using -march=native)
...ly 6 model 62 (0x3E) Ivy Bridge EP as core-avx-i.
---
lib/Support/Host.cpp | 96 ++++++++++++++++++++++++++++++++++++++---
lib/Target/X86/X86Subtarget.cpp | 7 ++-
2 files changed, 96 insertions(+), 7 deletions(-)
diff --git a/lib/Support/Host.cpp b/lib/Support/Host.cpp
index 380df6b..6e9a5c9 100644
--- a/lib/Support/Host.cpp
+++ b/lib/Support/Host.cpp
@@ -95,6 +95,75 @@ static bool GetX86CpuIDAndInfo(unsigned value, unsigned *rEAX, unsigned *rEBX,
#endif
}
+/// GetX86CpuIDAndInfoEx - Execute the specified cpuid with subleaf and return the
+/// 4 values in the specified arguments....
2013 Nov 23
2
[LLVMdev] [PATCH] Detect Haswell subarchitecture (i.e. using -march=native)
I agree with Tim, you need to implement a GetCpuIDAndInfoEx function in
Host.cpp and pass the correct value to ecx. Also you need to verify that 7
is a valid leaf because an invalid leaf is defined to return the highest
supported leaf on that processor. So if a processor supports say leaf 6 and
not leaf 7, then an access leaf 7 will return the data from leaf 6 causing
unrelated bits to be