CodeGen: Convert test to opaque pointers (#147886)

Apparently we have this weird CodeGen/Inputs directory which
got missed

Author: arsenm

llvm/test/CodeGen/Inputs/stack-guard-reassign.ll

@@ -1,22 +1,22 @@
-define i32 @fn(i8* %str) #0 {
+define i32 @fn(ptr %str) #0 {
 entry:
-  %str.addr = alloca i8*, align 4
+  %str.addr = alloca ptr, align 4
   %buffer = alloca [65536 x i8], align 1
-  store i8* %str, i8** %str.addr, align 4
-  %arraydecay = getelementptr inbounds [65536 x i8], [65536 x i8]* %buffer, i32 0, i32 0
-  %0 = load i8*, i8** %str.addr, align 4
-  %call = call i8* @strcpy(i8* %arraydecay, i8* %0)
-  %arraydecay1 = getelementptr inbounds [65536 x i8], [65536 x i8]* %buffer, i32 0, i32 0
-  %call2 = call i32 @puts(i8* %arraydecay1)
-  %arrayidx = getelementptr inbounds [65536 x i8], [65536 x i8]* %buffer, i32 0, i32 65535
-  %1 = load i8, i8* %arrayidx, align 1
+  store ptr %str, ptr %str.addr, align 4
+  %arraydecay = getelementptr inbounds [65536 x i8], ptr %buffer, i32 0, i32 0
+  %0 = load ptr, ptr %str.addr, align 4
+  %call = call ptr @strcpy(ptr %arraydecay, ptr %0)
+  %arraydecay1 = getelementptr inbounds [65536 x i8], ptr %buffer, i32 0, i32 0
+  %call2 = call i32 @puts(ptr %arraydecay1)
+  %arrayidx = getelementptr inbounds [65536 x i8], ptr %buffer, i32 0, i32 65535
+  %1 = load i8, ptr %arrayidx, align 1
   %conv = zext i8 %1 to i32
   ret i32 %conv
 }
 
-declare i8* @strcpy(i8*, i8*)
+declare ptr @strcpy(ptr, ptr)
 
-declare i32 @puts(i8*)
+declare i32 @puts(ptr)
 
 attributes #0 = { noinline nounwind optnone ssp }