all: add support for LLVM 19

interp/testdata/consteval.ll

@@ -3,7 +3,6 @@ target triple = "x86_64--linux"
 
 @intToPtrResult = global i8 0
 @ptrToIntResult = global i8 0
-@icmpResult = global i8 0
 @pointerTagResult = global i64 0
 @someArray = internal global {i16, i8, i8} zeroinitializer
 @someArrayPointer = global ptr zeroinitializer
@@ -17,7 +16,6 @@ define internal void @main.init() {
   call void @testIntToPtr()
   call void @testPtrToInt()
   call void @testConstGEP()
-  call void @testICmp()
   call void @testPointerTag()
   ret void
 }
@@ -53,19 +51,6 @@ define internal void @testConstGEP() {
   ret void
 }
 
-define internal void @testICmp() {
-  br i1 icmp eq (i64 ptrtoint (ptr @ptrToIntResult to i64), i64 0), label %equal, label %unequal
-equal:
-  ; should not be reached
-  store i8 1, ptr @icmpResult
-  ret void
-unequal:
-  ; should be reached
-  store i8 2, ptr @icmpResult
-  ret void
-  ret void
-}
-
 define internal void @testPointerTag() {
   %val = and i64 ptrtoint (ptr getelementptr inbounds (i8, ptr @someArray, i32 2) to i64), 3
   store i64 %val, ptr @pointerTagResult