[X86[] fp80-strict-libcalls.ll - add missing fp80 libm declarations for completeness

Noticed while reviewing llvm#110760

Author: RKSimon

llvm/test/CodeGen/X86/fp80-strict-libcalls.ll

@@ -809,7 +809,9 @@ attributes #0 = { strictfp }
 declare x86_fp80 @llvm.experimental.constrained.fma.f80(x86_fp80, x86_fp80, x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.frem.f80(x86_fp80, x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.ceil.f80(x86_fp80, metadata)
+declare x86_fp80 @llvm.experimental.constrained.acos.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.cos.f80(x86_fp80, metadata, metadata)
+declare x86_fp80 @llvm.experimental.constrained.cosh.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.exp.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.exp2.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.floor.f80(x86_fp80, metadata)
@@ -824,8 +826,12 @@ declare x86_fp80 @llvm.experimental.constrained.powi.f80(x86_fp80, i32, metadata
 declare x86_fp80 @llvm.experimental.constrained.rint.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.round.f80(x86_fp80, metadata)
 declare x86_fp80 @llvm.experimental.constrained.roundeven.f80(x86_fp80, metadata)
+declare x86_fp80 @llvm.experimental.constrained.asin.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.sin.f80(x86_fp80, metadata, metadata)
+declare x86_fp80 @llvm.experimental.constrained.sinh.f80(x86_fp80, metadata, metadata)
+declare x86_fp80 @llvm.experimental.constrained.atan.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.tan.f80(x86_fp80, metadata, metadata)
+declare x86_fp80 @llvm.experimental.constrained.tanh.f80(x86_fp80, metadata, metadata)
 declare x86_fp80 @llvm.experimental.constrained.trunc.f80(x86_fp80, metadata)
 declare i32 @llvm.experimental.constrained.lrint.i32.f80(x86_fp80, metadata, metadata)
 declare i64 @llvm.experimental.constrained.llrint.i64.f80(x86_fp80, metadata, metadata)