clang/test/CodeGen/LoongArch/inline-asm-gcc-regs.c

   1 // RUN: %clang_cc1 -triple loongarch32 -emit-llvm -O2 %s -o - | FileCheck %s
   2 // RUN: %clang_cc1 -triple loongarch64 -emit-llvm -O2 %s -o - | FileCheck %s
   3
   4 /// Check GCC register names and alias can be used in register variable definition.
   5
   6 // CHECK-LABEL: @test_r0
   7 // CHECK: call void asm sideeffect "", "{$r0}"(i32 undef)
   8 void test_r0() {
   9     register int a asm ("$r0");
  10     register int b asm ("r0");
  11     asm ("" :: "r" (a));
  12     asm ("" :: "r" (b));
  13 }
  14
  15 // CHECK-LABEL: @test_r12
  16 // CHECK: call void asm sideeffect "", "{$r12}"(i32 undef)
  17 void test_r12() {
  18     register int a asm ("$r12");
  19     register int b asm ("r12");
  20     asm ("" :: "r" (a));
  21     asm ("" :: "r" (b));
  22 }
  23
  24 // CHECK-LABEL: @test_r31
  25 // CHECK: call void asm sideeffect "", "{$r31}"(i32 undef)
  26 void test_r31() {
  27     register int a asm ("$r31");
  28     register int b asm ("r31");
  29     asm ("" :: "r" (a));
  30     asm ("" :: "r" (b));
  31 }
  32
  33 // CHECK-LABEL: @test_zero
  34 // CHECK: call void asm sideeffect "", "{$r0}"(i32 undef)
  35 void test_zero() {
  36     register int a asm ("$zero");
  37     register int b asm ("zero");
  38     asm ("" :: "r" (a));
  39     asm ("" :: "r" (b));
  40 }
  41
  42 // CHECK-LABEL: @test_a0
  43 // CHECK: call void asm sideeffect "", "{$r4}"(i32 undef)
  44 void test_a0() {
  45     register int a asm ("$a0");
  46     register int b asm ("a0");
  47     asm ("" :: "r" (a));
  48     asm ("" :: "r" (b));
  49 }
  50
  51 // CHECK-LABEL: @test_t1
  52 // CHECK: call void asm sideeffect "", "{$r13}"(i32 undef)
  53 void test_t1() {
  54     register int a asm ("$t1");
  55     register int b asm ("t1");
  56     asm ("" :: "r" (a));
  57     asm ("" :: "r" (b));
  58 }
  59
  60 // CHECK-LABEL: @test_fp
  61 // CHECK: call void asm sideeffect "", "{$r22}"(i32 undef)
  62 void test_fp() {
  63     register int a asm ("$fp");
  64     register int b asm ("fp");
  65     asm ("" :: "r" (a));
  66     asm ("" :: "r" (b));
  67 }
  68
  69 // CHECK-LABEL: @test_s2
  70 // CHECK: call void asm sideeffect "", "{$r25}"(i32 undef)
  71 void test_s2() {
  72     register int a asm ("$s2");
  73     register int b asm ("s2");
  74     asm ("" :: "r" (a));
  75     asm ("" :: "r" (b));
  76 }
  77
  78 // CHECK-LABEL: @test_f0
  79 // CHECK: call void asm sideeffect "", "{$f0}"(float undef)
  80 void test_f0() {
  81     register float a asm ("$f0");
  82     asm ("" :: "f" (a));
  83 }
  84
  85 // CHECK-LABEL: @test_f14
  86 // CHECK: call void asm sideeffect "", "{$f14}"(float undef)
  87 void test_f14() {
  88     register float a asm ("$f14");
  89     asm ("" :: "f" (a));
  90 }
  91
  92 // CHECK-LABEL: @test_f31
  93 // CHECK: call void asm sideeffect "", "{$f31}"(float undef)
  94 void test_f31() {
  95     register float a asm ("$f31");
  96     asm ("" :: "f" (a));
  97 }
  98
  99 // CHECK-LABEL: @test_fa0
 100 // CHECK: call void asm sideeffect "", "{$f0}"(float undef)
 101 void test_fa0() {
 102     register float a asm ("$fa0");
 103     asm ("" :: "f" (a));
 104 }
 105
 106 // CHECK-LABEL: @test_ft1
 107 // CHECK: call void asm sideeffect "", "{$f9}"(float undef)
 108 void test_ft1() {
 109     register float a asm ("$ft1");
 110     asm ("" :: "f" (a));
 111 }
 112
 113 // CHECK-LABEL: @test_fs2
 114 // CHECK: call void asm sideeffect "", "{$f26}"(float undef)
 115 void test_fs2() {
 116     register float a asm ("$fs2");
 117     asm ("" :: "f" (a));
 118 }
 119
 120 // CHECK-LABEL: @test_fcc
 121 // CHECK: call void asm sideeffect "", "~{$fcc0}"()
 122 // CHECK: call void asm sideeffect "", "~{$fcc7}"()
 123 void test_fcc() {
 124     asm ("" ::: "$fcc0");
 125     asm ("" ::: "$fcc7");
 126 }