; RUN: opt < %s -dfsan -S | FileCheck %s --check-prefix=LEGACY
; RUN: opt < %s -dfsan -dfsan-fast-16-labels=true -S | FileCheck %s --check-prefix=FAST16
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

define {i32, i32} @test({i32, i32} %a, i1 %c) {
  ; LEGACY: [[AL:%.*]] = load i16, i16* bitcast ([100 x i64]* @__dfsan_arg_tls to i16*), align [[ALIGN:2]]
  ; LEGACY: [[PL:%.*]] = phi i16 [ [[AL]], %T ], [ [[AL]], %F ]
  ; LEGACY: store i16 [[PL]], i16* bitcast ([100 x i64]* @__dfsan_retval_tls to i16*), align [[ALIGN]]

  ; FAST16: [[AL:%.*]] = load { i16, i16 }, { i16, i16 }* bitcast ([100 x i64]* @__dfsan_arg_tls to { i16, i16 }*), align [[ALIGN:2]]
  ; FAST16: [[AL0:%.*]] = insertvalue { i16, i16 } [[AL]], i16 0, 0
  ; FAST16: [[AL1:%.*]] = insertvalue { i16, i16 } [[AL]], i16 0, 1
  ; FAST16: [[PL:%.*]] = phi { i16, i16 } [ [[AL0]], %T ], [ [[AL1]], %F ]
  ; FAST16: store { i16, i16 } [[PL]], { i16, i16 }* bitcast ([100 x i64]* @__dfsan_retval_tls to { i16, i16 }*), align [[ALIGN]]

entry:
  br i1 %c, label %T, label %F
  
T:
  %at = insertvalue {i32, i32} %a, i32 1, 0
  br label %done
  
F:
  %af = insertvalue {i32, i32} %a, i32 1, 1
  br label %done
  
done:
  %b = phi {i32, i32} [%at, %T], [%af, %F]
  ret {i32, i32} %b  
}