[opaque pointer type] Add textual IR support for explicit type parameter for global aliases

update.py:
import fileinput
import sys
import re

alias_match_prefix = r"(.*(?:=|:|^)\s*(?:external |)(?:(?:private|internal|linkonce|linkonce_odr|weak|weak_odr|common|appending|extern_weak|available_externally) )?(?:default |hidden |protected )?(?:dllimport |dllexport )?(?:unnamed_addr |)(?:thread_local(?:\([a-z]*\))? )?alias"
plain = re.compile(alias_match_prefix + r" (.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|addrspacecast|\[\[[a-zA-Z]|\{\{).*$)")
cast  = re.compile(alias_match_prefix + r") ((?:bitcast|inttoptr|addrspacecast)\s*\(.* to (.*?)(| addrspace\(\d+\) *)\*\)\s*(?:;.*)?$)")
gep   = re.compile(alias_match_prefix + r") ((?:getelementptr)\s*(?:inbounds)?\s*\((?P<type>.*), (?P=type)(?:\s*addrspace\(\d+\)\s*)?\* .*\)\s*(?:;.*)?$)")

def conv(line):
  m = re.match(cast, line)
  if m:
    return m.group(1) + " " + m.group(3) + ", " + m.group(2)
  m = re.match(gep, line)
  if m:
    return m.group(1) + " " + m.group(3) + ", " + m.group(2)
  m = re.match(plain, line)
  if m:
    return m.group(1) + ", " + m.group(2) + m.group(3) + "*" + m.group(4) + "\n"
  return line

for line in sys.stdin:
  sys.stdout.write(conv(line))

apply.sh:
for name in "$@"
do
  python3 `dirname "$0"`/update.py < "$name" > "$name.tmp" && mv "$name.tmp" "$name"
  rm -f "$name.tmp"
done

The actual commands:
From llvm/src:
find test/ -name *.ll | xargs ./apply.sh
From llvm/src/tools/clang:
find test/ -name *.mm -o -name *.m -o -name *.cpp -o -name *.c | xargs -I '{}' ../../apply.sh "{}"
From llvm/src/tools/polly:
find test/ -name *.ll | xargs ./apply.sh

llvm-svn: 247378
diff --git a/llvm/test/Verifier/alias.ll b/llvm/test/Verifier/alias.ll
index dd04ae0..3fb1404 100644
--- a/llvm/test/Verifier/alias.ll
+++ b/llvm/test/Verifier/alias.ll
@@ -2,18 +2,18 @@
 
 
 declare void @f()
-@fa = alias void ()* @f
+@fa = alias void (), void ()* @f
 ; CHECK: Alias must point to a definition
 ; CHECK-NEXT: @fa
 
 @g = external global i32
-@ga = alias i32* @g
+@ga = alias i32, i32* @g
 ; CHECK: Alias must point to a definition
 ; CHECK-NEXT: @ga
 
 
-@test2_a = alias i32* @test2_b
-@test2_b = alias i32* @test2_a
+@test2_a = alias i32, i32* @test2_b
+@test2_b = alias i32, i32* @test2_a
 ; CHECK:      Aliases cannot form a cycle
 ; CHECK-NEXT: i32* @test2_a
 ; CHECK-NEXT: Aliases cannot form a cycle
@@ -21,7 +21,7 @@
 
 
 @test3_a = global i32 42
-@test3_b = weak alias i32* @test3_a
-@test3_c = alias i32* @test3_b
+@test3_b = weak alias i32, i32* @test3_a
+@test3_c = alias i32, i32* @test3_b
 ; CHECK: Alias cannot point to a weak alias
 ; CHECK-NEXT: i32* @test3_c