clang/test/CodeGen/X86/x86-builtins-vector-width.c

   1 // RUN: %clang_cc1 -triple i686-linux-gnu -target-cpu i686 -emit-llvm %s -o - | FileCheck %s
   2
   3 typedef double V2LLi __attribute__((vector_size(16)));
   4 typedef double V4LLi __attribute__((vector_size(32)));
   5
   6 // Make sure builtin forces a min-legal-width attribute
   7 void foo(void) {
   8   V2LLi  tmp_V2LLi;
   9
  10   tmp_V2LLi = __builtin_ia32_undef128();
  11 }
  12
  13 // Make sure explicit attribute larger than builtin wins.
  14 void goo(void) __attribute__((__min_vector_width__(256))) {
  15   V2LLi  tmp_V2LLi;
  16
  17   tmp_V2LLi = __builtin_ia32_undef128();
  18 }
  19
  20 // Make sure builtin larger than explicit attribute wins.
  21 void hoo(void) __attribute__((__min_vector_width__(128))) {
  22   V4LLi  tmp_V4LLi;
  23
  24   tmp_V4LLi = __builtin_ia32_undef256();
  25 }
  26
  27 // CHECK: foo{{.*}} #0
  28 // CHECK: goo{{.*}} #1
  29 // CHECK: hoo{{.*}} #1
  30
  31 // CHECK: #0 = {{.*}}"min-legal-vector-width"="128"
  32 // CHECK: #1 = {{.*}}"min-legal-vector-width"="256"