[libclc] Fix unresolved reference to missing table (llvm#133691)

Splitting the 'ln_tbl' into two in db98e29 wasn't done thoroughly
enough as some references to the old table still remained. This commit
fixes the unresolved references by updating to the new split table.

Author: frasercrmck

libclc/clc/include/clc/math/tables.h

@@ -78,7 +78,6 @@ CLC_TABLE_FUNCTION_DECL(float, exp_tbl_ep_tail);
 
 #pragma OPENCL EXTENSION cl_khr_fp64 : enable
 
-TABLE_FUNCTION_DECL(double2, ln_tbl);
 CLC_TABLE_FUNCTION_DECL(double, ln_tbl_lo);
 CLC_TABLE_FUNCTION_DECL(double, ln_tbl_hi);
 CLC_TABLE_FUNCTION_DECL(double, atan_jby256_tbl_head);

libclc/clc/lib/generic/math/clc_log_base.h

@@ -261,9 +261,8 @@ __clc_log(double x)
   int index = __clc_as_int2(ux).hi >> 13;
   index = ((0x80 | (index & 0x7e)) >> 1) + (index & 0x1);
 
-  double2 tv = USE_TABLE(ln_tbl, index - 64);
-  double z1 = tv.s0;
-  double q = tv.s1;
+  double z1 = USE_TABLE(ln_tbl_lo, index - 64);
+  double q = USE_TABLE(ln_tbl_hi, index - 64);
 
   double f1 = index * 0x1.0p-7;
   double f2 = f - f1;

llvm/lib/Target/X86/X86.td

@@ -371,8 +371,7 @@ def FeatureMOVRS   : SubtargetFeature<"movrs", "HasMOVRS", "true",
                            "Enable MOVRS", []>;
 
 // Ivy Bridge and newer processors have enhanced REP MOVSB and STOSB (aka
-// "string operations"). See "REP String Enhancement" in the Intel Software
-// Development Manual. This feature essentially means that REP MOVSB will copy
+// "string operations"). This feature essentially means that REP MOVSB will copy
 // using the largest available size instead of copying bytes one by one, making
 // it at least as fast as REPMOVS{W,D,Q}.
 def FeatureERMSB