Stop testing FP16 assembly codegen for now (swiftlang#82045)

Older iOS / watchOS targets do not default to having armv8.2 FP16 enabled, so FileCheck was failing when building for those because we didn't have the "right" assembly pattern. Stop testing Float16 compare codegen for now. I'll restore it with an IR test instead of assembly.

Resolves <rdar://152418752>

Author: stephentyrone

test/stdlib/SIMDFloatComparisons.swift.gyb

@@ -16,141 +16,87 @@
 
 import Swift
 
-%for bits in [16,32,64]:
-% scalar = {16:'Float16',32:'Float',64:'Double'}[bits]
+%for bits in [32,64]:
+% scalar = {32:'Float',64:'Double'}[bits]
 % for totalBits in [64,128]:
 %  n = totalBits // bits
 %  if n != 1:
 %   neonSuffix = str(n) + {8:'b',16:'h',32:'s',64:'d'}[bits]
-%   if bits == 16:
-#if arch(arm64)
-@available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
-%   end
 func compare_eq${n}x${bits}(
   _ a: SIMD${n}<${scalar}>, _ b: SIMD${n}<${scalar}>
 ) -> SIMDMask<SIMD${n}<Int${bits}>> {
   a .== b
 }
-%   if bits == 16:
-#endif
-// CHECK-arm64: compare_eq${n}x${bits}{{[[:alnum:]_]+}}:
-%   else:
 // CHECK: compare_eq${n}x${bits}{{[[:alnum:]_]+}}:
 // CHECK-x86_64: cmpeqp${'s' if bits == 32 else 'd'}
 // CHECK-x86_64: ret
-%   end
 // CHECKO-arm64-NEXT: fcmeq.${neonSuffix} v0, v0, v1
 // CHECKO-arm64-NEXT: ret
 // CHECKOnone-arm64: fcmeq.${neonSuffix}
 // CHECKOnone-arm64: ret
 
-%   if bits == 16:
-#if arch(arm64)
-@available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
-%   end
 func compare_ne${n}x${bits}(
   _ a: SIMD${n}<${scalar}>, _ b: SIMD${n}<${scalar}>
 ) -> SIMDMask<SIMD${n}<Int${bits}>> {
   a .!= b
 }
-%   if bits == 16:
-#endif
-// CHECK-arm64: compare_ne${n}x${bits}{{[[:alnum:]_]+}}:
-%   else:
 // CHECK: compare_ne${n}x${bits}{{[[:alnum:]_]+}}:
 // CHECK-x86_64: cmpneqp${'s' if bits == 32 else 'd'}
 // CHECK-x86_64: ret
-%   end
 // CHECKO-arm64-NEXT: fcmeq.${neonSuffix} [[TMP:v[0-9]+]], v0, v1
 // CHECKO-arm64-NEXT: mvn.${totalBits//8}b v0, [[TMP]]
 // CHECKO-arm64-NEXT: ret
 // CHECKOnone-arm64: fcmeq.${neonSuffix}
 // CHECKOnone-arm64: mvn.${totalBits//8}b
 // CHECKOnone-arm64: ret
 
-%   if bits == 16:
-#if arch(arm64)
-@available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
-%   end
 func compare_lt${n}x${bits}(
   _ a: SIMD${n}<${scalar}>, _ b: SIMD${n}<${scalar}>
 ) -> SIMDMask<SIMD${n}<Int${bits}>> {
   a .< b
 }
-%   if bits == 16:
-#endif
-// CHECK-arm64: compare_lt${n}x${bits}{{[[:alnum:]_]+}}:
-%   else:
 // CHECK: compare_lt${n}x${bits}{{[[:alnum:]_]+}}:
 // CHECK-x86_64: cmpltp${'s' if bits == 32 else 'd'}
 // CHECK-x86_64: ret
-%   end
 // CHECKO-arm64-NEXT: fcmgt.${neonSuffix} v0, v1, v0
 // CHECKO-arm64-NEXT: ret
 // CHECKOnone-arm64: fcmgt.${neonSuffix}
 // CHECKOnone-arm64: ret
 
-%   if bits == 16:
-#if arch(arm64)
-@available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
-%   end
 func compare_le${n}x${bits}(
   _ a: SIMD${n}<${scalar}>, _ b: SIMD${n}<${scalar}>
 ) -> SIMDMask<SIMD${n}<Int${bits}>> {
   a .<= b
 }
-%   if bits == 16:
-#endif
-// CHECK-arm64: compare_le${n}x${bits}{{[[:alnum:]_]+}}:
-%   else:
 // CHECK: compare_le${n}x${bits}{{[[:alnum:]_]+}}:
 // CHECK-x86_64: cmplep${'s' if bits == 32 else 'd'}
 // CHECK-x86_64: ret
-%   end
 // CHECKO-arm64-NEXT: fcmge.${neonSuffix} v0, v1, v0
 // CHECKO-arm64-NEXT: ret
 // CHECKOnone-arm64: fcmge.${neonSuffix}
 // CHECKOnone-arm64: ret
 
-%   if bits == 16:
-#if arch(arm64)
-@available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
-%   end
 func compare_ge${n}x${bits}(
   _ a: SIMD${n}<${scalar}>, _ b: SIMD${n}<${scalar}>
 ) -> SIMDMask<SIMD${n}<Int${bits}>> {
   a .>= b
 }
-%   if bits == 16:
-#endif
-// CHECK-arm64: compare_ge${n}x${bits}{{[[:alnum:]_]+}}:
-%   else:
 // CHECK: compare_ge${n}x${bits}{{[[:alnum:]_]+}}:
 // CHECK-x86_64: cmplep${'s' if bits == 32 else 'd'}
 // CHECK-x86_64: ret
-%   end
 // CHECKO-arm64-NEXT: fcmge.${neonSuffix} v0, v0, v1
 // CHECKO-arm64-NEXT: ret
 // CHECKOnone-arm64: fcmge.${neonSuffix}
 // CHECKOnone-arm64: ret
 
-%   if bits == 16:
-#if arch(arm64)
-@available(macOS 11.0, iOS 14.0, tvOS 14.0, watchOS 7.0, *)
-%   end
 func compare_gt${n}x${bits}(
   _ a: SIMD${n}<${scalar}>, _ b: SIMD${n}<${scalar}>
 ) -> SIMDMask<SIMD${n}<Int${bits}>> {
   a .> b
 }
-%   if bits == 16:
-#endif
-// CHECK-arm64: compare_gt${n}x${bits}{{[[:alnum:]_]+}}:
-%   else:
 // CHECK: compare_gt${n}x${bits}{{[[:alnum:]_]+}}:
 // CHECK-x86_64: cmpltp${'s' if bits == 32 else 'd'}
 // CHECK-x86_64: ret
-%   end
 // CHECKO-arm64-NEXT: fcmgt.${neonSuffix} v0, v0, v1
 // CHECKO-arm64-NEXT: ret
 // CHECKOnone-arm64: fcmgt.${neonSuffix}