disasm-test: Add callbr test output for LLVM 15+

disasm-test/tests/callbr.c

@@ -0,0 +1,18 @@
+// Adapted from the Clang test suite:
+// (https://github.com/llvm/llvm-project/blob/32103608fc073700f04238872d8b22655ddec3fb/clang/test/CodeGen/asm-goto.c#L5-L20),
+// which is licensed under the Apache License v2.0
+
+
+int main(void) {
+  int cond = 0;
+  asm volatile goto("testl %0, %0; jne %l1;"
+                    : /* No outputs */
+                    : "r"(cond)
+                    : /* No clobbers */
+                    : label_true, loop);
+  return 0;
+loop:
+  return 0;
+label_true:
+  return 1;
+}

disasm-test/tests/callbr.ll

@@ -0,0 +1,47 @@
+; ModuleID = 'callbr.c'
+source_filename = "callbr.c"
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+; Function Attrs: noinline nounwind optnone uwtable
+define dso_local i32 @main() #0 {
+  %1 = alloca i32, align 4
+  %2 = alloca i32, align 4
+  store i32 0, ptr %1, align 4
+  store i32 0, ptr %2, align 4
+  %3 = load i32, ptr %2, align 4
+  callbr void asm sideeffect "testl $0, $0; jne ${1:l};", "r,!i,!i,~{dirflag},~{fpsr},~{flags}"(i32 %3) #1
+          to label %4 [label %6, label %5], !srcloc !7
+
+4:                                                ; preds = %0
+  store i32 0, ptr %1, align 4
+  br label %7
+
+5:                                                ; preds = %0
+  store i32 0, ptr %1, align 4
+  br label %7
+
+6:                                                ; preds = %0
+  store i32 1, ptr %1, align 4
+  br label %7
+
+7:                                                ; preds = %6, %5, %4
+  %8 = load i32, ptr %1, align 4
+  ret i32 %8
+}
+
+attributes #0 = { noinline nounwind optnone uwtable "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
+attributes #1 = { nounwind }
+
+!llvm.module.flags = !{!0, !1, !2, !3, !4}
+!llvm.ident = !{!5}
+!llvm.commandline = !{!6}
+
+!0 = !{i32 1, !"wchar_size", i32 4}
+!1 = !{i32 7, !"PIC Level", i32 2}
+!2 = !{i32 7, !"PIE Level", i32 2}
+!3 = !{i32 7, !"uwtable", i32 2}
+!4 = !{i32 7, !"frame-pointer", i32 2}
+!5 = !{!"clang version 15.0.6"}
+!6 = !{!"/home/ryanglscott/Software/clang+llvm-15.0.6/bin/clang-15 -S -emit-llvm -frecord-command-line callbr.c -o callbr.ll"}
+!7 = !{i64 272}