https://gist.github.com/mikdusan/e7c3f566d5d8ab38dbcc7e29f9afb002

out.ll

; ModuleID = 'basic'
source_filename = "basic"
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"

%"[]u8" = type { i8*, i64 }
%std.builtin.StackTrace = type { i64, %"[]usize" }
%"[]usize" = type { i64*, i64 }

@panic.1 = internal unnamed_addr constant void (%"[]u8"*, %std.builtin.StackTrace*)* @panic, align 8
@zig_is_stage2 = internal unnamed_addr constant i1 false, align 1
@output_mode = internal unnamed_addr constant i2 -2, align 1

; Function Attrs: nobuiltin noredzone noreturn nounwind sspstrong
define internal fastcc void @panic(%"[]u8"* nonnull readonly align 8 %0, %std.builtin.StackTrace* align 8 %1) unnamed_addr #0 {
Entry:
  %error_return_trace = alloca %std.builtin.StackTrace*, align 8
  store %std.builtin.StackTrace* %1, %std.builtin.StackTrace** %error_return_trace, align 8
  br label %WhileCond

WhileCond:                                        ; preds = %WhileCond, %Entry
  br label %WhileCond
}

; Function Attrs: nobuiltin noredzone nounwind sspstrong
define void @entry() #1 {
Entry:
  %a = alloca i32, align 4
  store i32 187, i32* %a, align 4
  ret void
}

attributes #0 = { nobuiltin noredzone noreturn nounwind sspstrong "frame-pointer"="all" "stack-protector-buffer-size"="4" }
attributes #1 = { nobuiltin noredzone nounwind sspstrong "frame-pointer"="all" "stack-protector-buffer-size"="4" }

!llvm.module.flags = !{!0, !1, !2}
!llvm.dbg.cu = !{!3}

!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !{i32 2, !"Dwarf Version", i32 4}
!2 = !{i32 7, !"PIC Level", i32 2}
!3 = distinct !DICompileUnit(language: DW_LANG_C99, file: !4, producer: "zig 0.8.0", isOptimized: false, runtimeVersion: 0, emissionKind: NoDebug, enums: !5)
!4 = !DIFile(filename: "basic", directory: ".")
!5 = !{!6}
!6 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "std.builtin.OutputMode", scope: !7, file: !7, line: 443, baseType: !8, size: 8, align: 8, elements: !9)
!7 = !DIFile(filename: "builtin.zig", directory: "/home/mwa/code/zig/lib/std")
!8 = !DIBasicType(name: "u2", size: 8, encoding: DW_ATE_unsigned)
!9 = !{!10, !11, !12}
!10 = !DIEnumerator(name: "Exe", value: 0)
!11 = !DIEnumerator(name: "Lib", value: 1)
!12 = !DIEnumerator(name: "Obj", value: 2)