Exclude Apple M2 from XFAILs in NaN, Inf, and denorm sin and cos tests (#717)

As pointed out by @farzonl it appears that the sin and cos tests for
NaN, Inf, and denorm floats passes on the Apple machine that ran this PR
check:
https://github.com/llvm/llvm-project/actions/runs/21695662617/job/62565234979?pr=179836

Since the machine name is 'm2-mbp' it seems to be an Apple M2 MacBook
Pro.

This PR adds a more AppleM# feature flags and excludes AppleM2 from the
XFAIL for the NaN, Inf, and denorm sin and cos tests.

Author: Icohedron

test/Feature/HLSLLib/cos.nan-inf-denorm.32.test

@@ -63,7 +63,7 @@ DescriptorSets:
 # XFAIL: Vulkan && MoltenVK
 
 # Bug: https://github.com/llvm/offload-test-suite/issues/701
-# XFAIL: Metal && !AppleM1 && Clang
+# XFAIL: Metal && !AppleM1 && !AppleM2 && Clang
 
 # RUN: split-file %s %t
 # RUN: %dxc_target -Gis -T cs_6_5 -Fo %t.o %t/source.hlsl

test/Feature/HLSLLib/sin.nan-inf-denorm.32.test

@@ -63,7 +63,7 @@ DescriptorSets:
 # XFAIL: Vulkan && MoltenVK
 
 # Bug: https://github.com/llvm/offload-test-suite/issues/701
-# XFAIL: Metal && !AppleM1 && Clang
+# XFAIL: Metal && !AppleM1 && !AppleM2 && Clang
 
 # RUN: split-file %s %t
 # RUN: %dxc_target -Gis -T cs_6_5 -Fo %t.o %t/source.hlsl

test/lit.cfg.py

@@ -104,13 +104,11 @@ def setDeviceFeatures(config, device, compiler):
         config.available_features.add("AMD")
     if "Qualcomm" in device["Description"]:
         config.available_features.add("QC")
-    if "Apple M1" in device["Description"]:
-        # As tracked by issue
-        # https://github.com/llvm/offload-test-suite/issues/701, Apple M1 Macs
-        # appear to be handling NaN, Inf, and denorm 32-bit floating-point
-        # values correctly while newer SoCs are not, even with the -Gis compiler
-        # flag.
-        config.available_features.add("AppleM1")
+
+    appleSilicon = re.search(r"\bApple M(\d+)\b", device["Description"])
+    if appleSilicon:
+        gen = appleSilicon.group(1)
+        config.available_features.add(f"AppleM{gen}")
 
     HighestShaderModel = getHighestShaderModel(device["Features"])
     if (6, 6) <= HighestShaderModel: