[Test] Eased check lines for 32-bit.

rdar://124464363

Author: nate-chandler

test/SILOptimizer/builtins.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -enable-builtin-module -O -emit-sil %s | %FileCheck %s
+// RUN: %target-swift-frontend -enable-builtin-module -O -emit-sil %s | %IRGenFileCheck %s
 
 import Builtin
 
@@ -10,7 +10,7 @@ import Builtin
 // CHECK-SAME:      {{%[^,]+}} : $@thick T.Type):
 // CHECK:         [[SELF_RAW_VALUE:%[^,]+]] = struct_extract [[SELF]] : {{.*}} #UnsafeMutableRawPointer._rawValue
 // CHECK:         [[OFFSET_VALUE:%[^,]+]] = struct_extract [[OFFSET]] : {{.*}} #Int._value
-// CHECK:         [[OFFSET_WORD:%[^,]+]] = builtin "truncOrBitCast_Int64_Word"([[OFFSET_VALUE]] : $Builtin.Int64)
+// CHECK:         [[OFFSET_WORD:%[^,]+]] = builtin "{{trunc|sext}}OrBitCast_Int[[PTR_SIZE]]_Word"([[OFFSET_VALUE]] : $Builtin.Int[[PTR_SIZE]])
 // CHECK:         [[DESTINATION_POINTER:%[^,]+]] = index_raw_pointer [[SELF_RAW_VALUE]] : $Builtin.RawPointer, [[OFFSET_WORD]]
 // CHECK:         [[DESTINATION:%[^,]+]] = pointer_to_address [[DESTINATION_POINTER]] : $Builtin.RawPointer to [align=1]
 // CHECK:         copy_addr [[VALUE]] to [[DESTINATION]]