Re-land r335297 "[X86] Implement more of x86-64 large and medium PIC code models"

Don't try to generate large PIC code for non-ELF targets. Neither COFF
nor MachO have relocations for large position independent code, and
users have been using "large PIC" code models to JIT 64-bit code for a
while now. With this change, if they are generating ELF code, their
JITed code will truly be PIC, but if they target MachO or COFF, it will
contain 64-bit immediates that directly reference external symbols. For
a JIT, that's perfectly fine.

llvm-svn: 337740

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/utils/update_llc_test_checks.py b/llvm/utils/update_llc_test_checks.py
index f7d94cdbd78..09b49a763b6 100755
--- a/llvm/utils/update_llc_test_checks.py
+++ b/llvm/utils/update_llc_test_checks.py
@@ -30,6 +30,11 @@ def main():
   parser.add_argument(
       '--extra_scrub', action='store_true',
       help='Always use additional regex to further reduce diffs between various subtargets')
+  parser.add_argument(
+      '--x86_scrub_rip', action='store_true', default=True,
+      help='Use more regex for x86 matching to reduce diffs between various subtargets')
+  parser.add_argument(
+      '--no_x86_scrub_rip', action='store_false', dest='x86_scrub_rip')
   parser.add_argument('tests', nargs='+')
   args = parser.parse_args()