ARM64: initial clang support commit.

This adds Clang support for the ARM64 backend. There are definitely
still some rough edges, so please bring up any issues you see with
this patch.

As with the LLVM commit though, we think it'll be more useful for
merging with AArch64 from within the tree.

llvm-svn: 205100

1 files changed, 430 insertions, 0 deletions

diff --git a/clang/test/CodeGen/arm64-abi-vector.c b/clang/test/CodeGen/arm64-abi-vector.c
new file mode 100644
index 00000000000..502fb080d70
--- /dev/null
+++ b/clang/test/CodeGen/arm64-abi-vector.c
@@ -0,0 +1,430 @@
+// RUN: %clang_cc1 -triple arm64-apple-ios7 -target-abi darwinpcs -emit-llvm -o - %s | FileCheck %s
+
+#include <stdarg.h>
+
+typedef __attribute__(( ext_vector_type(3) ))  char __char3;
+typedef __attribute__(( ext_vector_type(4) ))  char __char4;
+typedef __attribute__(( ext_vector_type(5) ))  char __char5;
+typedef __attribute__(( ext_vector_type(9) ))  char __char9;
+typedef __attribute__(( ext_vector_type(19) )) char __char19;
+typedef __attribute__(( ext_vector_type(3) ))  short __short3;
+typedef __attribute__(( ext_vector_type(5) ))  short __short5;
+typedef __attribute__(( ext_vector_type(3) ))  int __int3;
+typedef __attribute__(( ext_vector_type(5) ))  int __int5;
+typedef __attribute__(( ext_vector_type(3) ))  double __double3;
+
+double varargs_vec_3c(int fixed, ...) {
+// CHECK: varargs_vec_3c
+// CHECK: alloca <3 x i8>, align 4
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <3 x i8>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __char3 c3 = va_arg(ap, __char3);
+  sum = sum + c3.x + c3.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_3c(__char3 *in) {
+// CHECK: test_3c
+// CHECK: call double (i32, ...)* @varargs_vec_3c(i32 3, i32 {{%.*}})
+  return varargs_vec_3c(3, *in);
+}
+
+double varargs_vec_4c(int fixed, ...) {
+// CHECK: varargs_vec_4c
+// CHECK: alloca <4 x i8>, align 4
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <4 x i8>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __char4 c4 = va_arg(ap, __char4);
+  sum = sum + c4.x + c4.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_4c(__char4 *in) {
+// CHECK: test_4c
+// CHECK: call double (i32, ...)* @varargs_vec_4c(i32 4, i32 {{%.*}})
+  return varargs_vec_4c(4, *in);
+}
+
+double varargs_vec_5c(int fixed, ...) {
+// CHECK: varargs_vec_5c
+// CHECK: alloca <5 x i8>, align 8
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <5 x i8>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __char5 c5 = va_arg(ap, __char5);
+  sum = sum + c5.x + c5.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_5c(__char5 *in) {
+// CHECK: test_5c
+// CHECK: call double (i32, ...)* @varargs_vec_5c(i32 5, <2 x i32> {{%.*}})
+  return varargs_vec_5c(5, *in);
+}
+
+double varargs_vec_9c(int fixed, ...) {
+// CHECK: varargs_vec_9c
+// CHECK: alloca <9 x i8>, align 16
+// CHECK: [[ALIGN:%.*]] = and i64 {{%.*}}, -16
+// CHECK: [[AP_ALIGN:%.*]] = inttoptr i64 [[ALIGN]] to i8*
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_ALIGN]], i32 16
+// CHECK: bitcast i8* [[AP_ALIGN]] to <9 x i8>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __char9 c9 = va_arg(ap, __char9);
+  sum = sum + c9.x + c9.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_9c(__char9 *in) {
+// CHECK: test_9c
+// CHECK: call double (i32, ...)* @varargs_vec_9c(i32 9, <4 x i32> {{%.*}})
+  return varargs_vec_9c(9, *in);
+}
+
+double varargs_vec_19c(int fixed, ...) {
+// CHECK: varargs_vec_19c
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: [[VAR:%.*]] = bitcast i8* [[AP_CUR]] to i8**
+// CHECK: [[VAR2:%.*]] = load i8** [[VAR]]
+// CHECK: bitcast i8* [[VAR2]] to <19 x i8>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __char19 c19 = va_arg(ap, __char19);
+  sum = sum + c19.x + c19.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_19c(__char19 *in) {
+// CHECK: test_19c
+// CHECK: call double (i32, ...)* @varargs_vec_19c(i32 19, <19 x i8>* {{%.*}})
+  return varargs_vec_19c(19, *in);
+}
+
+double varargs_vec_3s(int fixed, ...) {
+// CHECK: varargs_vec_3s
+// CHECK: alloca <3 x i16>, align 8
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <3 x i16>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __short3 c3 = va_arg(ap, __short3);
+  sum = sum + c3.x + c3.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_3s(__short3 *in) {
+// CHECK: test_3s
+// CHECK: call double (i32, ...)* @varargs_vec_3s(i32 3, <2 x i32> {{%.*}})
+  return varargs_vec_3s(3, *in);
+}
+
+double varargs_vec_5s(int fixed, ...) {
+// CHECK: varargs_vec_5s
+// CHECK: alloca <5 x i16>, align 16
+// CHECK: [[ALIGN:%.*]] = and i64 {{%.*}}, -16
+// CHECK: [[AP_ALIGN:%.*]] = inttoptr i64 [[ALIGN]] to i8*
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_ALIGN]], i32 16
+// CHECK: bitcast i8* [[AP_ALIGN]] to <5 x i16>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __short5 c5 = va_arg(ap, __short5);
+  sum = sum + c5.x + c5.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_5s(__short5 *in) {
+// CHECK: test_5s
+// CHECK: call double (i32, ...)* @varargs_vec_5s(i32 5, <4 x i32> {{%.*}})
+  return varargs_vec_5s(5, *in);
+}
+
+double varargs_vec_3i(int fixed, ...) {
+// CHECK: varargs_vec_3i
+// CHECK: alloca <3 x i32>, align 16
+// CHECK: [[ALIGN:%.*]] = and i64 {{%.*}}, -16
+// CHECK: [[AP_ALIGN:%.*]] = inttoptr i64 [[ALIGN]] to i8*
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_ALIGN]], i32 16
+// CHECK: bitcast i8* [[AP_ALIGN]] to <3 x i32>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __int3 c3 = va_arg(ap, __int3);
+  sum = sum + c3.x + c3.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_3i(__int3 *in) {
+// CHECK: test_3i
+// CHECK: call double (i32, ...)* @varargs_vec_3i(i32 3, <4 x i32> {{%.*}})
+  return varargs_vec_3i(3, *in);
+}
+
+double varargs_vec_5i(int fixed, ...) {
+// CHECK: varargs_vec_5i
+// CHECK: alloca <5 x i32>, align 16
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: [[VAR:%.*]] = bitcast i8* [[AP_CUR]] to i8**
+// CHECK: [[VAR2:%.*]] = load i8** [[VAR]]
+// CHECK: bitcast i8* [[VAR2]] to <5 x i32>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __int5 c5 = va_arg(ap, __int5);
+  sum = sum + c5.x + c5.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_5i(__int5 *in) {
+// CHECK: test_5i
+// CHECK: call double (i32, ...)* @varargs_vec_5i(i32 5, <5 x i32>* {{%.*}})
+  return varargs_vec_5i(5, *in);
+}
+
+double varargs_vec_3d(int fixed, ...) {
+// CHECK: varargs_vec_3d
+// CHECK: alloca <3 x double>, align 16
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: [[VAR:%.*]] = bitcast i8* [[AP_CUR]] to i8**
+// CHECK: [[VAR2:%.*]] = load i8** [[VAR]]
+// CHECK: bitcast i8* [[VAR2]] to <3 x double>*
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __double3 c3 = va_arg(ap, __double3);
+  sum = sum + c3.x + c3.y;
+  va_end(ap);
+  return sum;
+}
+
+double test_3d(__double3 *in) {
+// CHECK: test_3d
+// CHECK: call double (i32, ...)* @varargs_vec_3d(i32 3, <3 x double>* {{%.*}})
+  return varargs_vec_3d(3, *in);
+}
+
+double varargs_vec(int fixed, ...) {
+// CHECK: varargs_vec
+  va_list ap;
+  double sum = fixed;
+  va_start(ap, fixed);
+  __char3 c3 = va_arg(ap, __char3);
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <3 x i8>*
+  sum = sum + c3.x + c3.y;
+  __char5 c5 = va_arg(ap, __char5);
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <5 x i8>*
+  sum = sum + c5.x + c5.y;
+  __char9 c9 = va_arg(ap, __char9);
+// CHECK: [[ALIGN:%.*]] = and i64 {{%.*}}, -16
+// CHECK: [[AP_ALIGN:%.*]] = inttoptr i64 [[ALIGN]] to i8*
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_ALIGN]], i32 16
+// CHECK: bitcast i8* [[AP_ALIGN]] to <9 x i8>*
+  sum = sum + c9.x + c9.y;
+  __char19 c19 = va_arg(ap, __char19);
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: [[VAR:%.*]] = bitcast i8* [[AP_CUR]] to i8**
+// CHECK: [[VAR2:%.*]] = load i8** [[VAR]]
+// CHECK: bitcast i8* [[VAR2]] to <19 x i8>*
+  sum = sum + c19.x + c19.y;
+  __short3 s3 = va_arg(ap, __short3);
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: bitcast i8* [[AP_CUR]] to <3 x i16>*
+  sum = sum + s3.x + s3.y;
+  __short5 s5 = va_arg(ap, __short5);
+// CHECK: [[ALIGN:%.*]] = and i64 {{%.*}}, -16
+// CHECK: [[AP_ALIGN:%.*]] = inttoptr i64 [[ALIGN]] to i8*
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_ALIGN]], i32 16
+// CHECK: bitcast i8* [[AP_ALIGN]] to <5 x i16>*
+  sum = sum + s5.x + s5.y;
+  __int3 i3 = va_arg(ap, __int3);
+// CHECK: [[ALIGN:%.*]] = and i64 {{%.*}}, -16
+// CHECK: [[AP_ALIGN:%.*]] = inttoptr i64 [[ALIGN]] to i8*
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_ALIGN]], i32 16
+// CHECK: bitcast i8* [[AP_ALIGN]] to <3 x i32>*
+  sum = sum + i3.x + i3.y;
+  __int5 i5 = va_arg(ap, __int5);
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: [[VAR:%.*]] = bitcast i8* [[AP_CUR]] to i8**
+// CHECK: [[VAR2:%.*]] = load i8** [[VAR]]
+// CHECK: bitcast i8* [[VAR2]] to <5 x i32>*
+  sum = sum + i5.x + i5.y;
+  __double3 d3 = va_arg(ap, __double3);
+// CHECK: [[AP_NEXT:%.*]] = getelementptr i8* [[AP_CUR:%.*]], i32 8
+// CHECK: [[VAR:%.*]] = bitcast i8* [[AP_CUR]] to i8**
+// CHECK: [[VAR2:%.*]] = load i8** [[VAR]]
+// CHECK: bitcast i8* [[VAR2]] to <3 x double>*
+  sum = sum + d3.x + d3.y;
+  va_end(ap);
+  return sum;
+}
+
+double test(__char3 *c3, __char5 *c5, __char9 *c9, __char19 *c19,
+            __short3 *s3, __short5 *s5, __int3 *i3, __int5 *i5,
+            __double3 *d3) {
+  double ret = varargs_vec(3, *c3, *c5, *c9, *c19, *s3, *s5, *i3, *i5, *d3);
+// CHECK: call double (i32, ...)* @varargs_vec(i32 3, i32 {{%.*}}, <2 x i32> {{%.*}}, <4 x i32> {{%.*}}, <19 x i8>* {{%.*}}, <2 x i32> {{%.*}}, <4 x i32> {{%.*}}, <4 x i32> {{%.*}}, <5 x i32>* {{%.*}}, <3 x double>* {{%.*}})
+  return ret;
+}
+
+__attribute__((noinline)) double args_vec_3c(int fixed, __char3 c3) {
+// CHECK: args_vec_3c
+// CHECK: [[C3:%.*]] = alloca <3 x i8>, align 4
+// CHECK: [[TMP:%.*]] = bitcast <3 x i8>* [[C3]] to i32*
+// CHECK: store i32 {{%.*}}, i32* [[TMP]]
+  double sum = fixed;
+  sum = sum + c3.x + c3.y;
+  return sum;
+}
+
+double fixed_3c(__char3 *in) {
+// CHECK: fixed_3c
+// CHECK: call double @args_vec_3c(i32 3, i32 {{%.*}})
+  return args_vec_3c(3, *in);
+}
+
+__attribute__((noinline)) double args_vec_5c(int fixed, __char5 c5) {
+// CHECK: args_vec_5c
+// CHECK: [[C5:%.*]] = alloca <5 x i8>, align 8
+// CHECK: [[TMP:%.*]] = bitcast <5 x i8>* [[C5]] to <2 x i32>*
+// CHECK: store <2 x i32> {{%.*}}, <2 x i32>* [[TMP]], align 1
+  double sum = fixed;
+  sum = sum + c5.x + c5.y;
+  return sum;
+}
+
+double fixed_5c(__char5 *in) {
+// CHECK: fixed_5c
+// CHECK: call double @args_vec_5c(i32 5, <2 x i32> {{%.*}})
+  return args_vec_5c(5, *in);
+}
+
+__attribute__((noinline)) double args_vec_9c(int fixed, __char9 c9) {
+// CHECK: args_vec_9c
+// CHECK: [[C9:%.*]] = alloca <9 x i8>, align 16
+// CHECK: [[TMP:%.*]] = bitcast <9 x i8>* [[C9]] to <4 x i32>*
+// CHECK: store <4 x i32> {{%.*}}, <4 x i32>* [[TMP]], align 1
+  double sum = fixed;
+  sum = sum + c9.x + c9.y;
+  return sum;
+}
+
+double fixed_9c(__char9 *in) {
+// CHECK: fixed_9c
+// CHECK: call double @args_vec_9c(i32 9, <4 x i32> {{%.*}})
+  return args_vec_9c(9, *in);
+}
+
+__attribute__((noinline)) double args_vec_19c(int fixed, __char19 c19) {
+// CHECK: args_vec_19c
+// CHECK: [[C19:%.*]] = load <19 x i8>* {{.*}}, align 16
+  double sum = fixed;
+  sum = sum + c19.x + c19.y;
+  return sum;
+}
+
+double fixed_19c(__char19 *in) {
+// CHECK: fixed_19c
+// CHECK: call double @args_vec_19c(i32 19, <19 x i8>* {{%.*}})
+  return args_vec_19c(19, *in);
+}
+
+__attribute__((noinline)) double args_vec_3s(int fixed, __short3 c3) {
+// CHECK: args_vec_3s
+// CHECK: [[C3:%.*]] = alloca <3 x i16>, align 8
+// CHECK: [[TMP:%.*]] = bitcast <3 x i16>* [[C3]] to <2 x i32>*
+// CHECK: store <2 x i32> {{%.*}}, <2 x i32>* [[TMP]], align 1
+  double sum = fixed;
+  sum = sum + c3.x + c3.y;
+  return sum;
+}
+
+double fixed_3s(__short3 *in) {
+// CHECK: fixed_3s
+// CHECK: call double @args_vec_3s(i32 3, <2 x i32> {{%.*}})
+  return args_vec_3s(3, *in);
+}
+
+__attribute__((noinline)) double args_vec_5s(int fixed, __short5 c5) {
+// CHECK: args_vec_5s
+// CHECK: [[C5:%.*]] = alloca <5 x i16>, align 16
+// CHECK: [[TMP:%.*]] = bitcast <5 x i16>* [[C5]] to <4 x i32>*
+// CHECK: store <4 x i32> {{%.*}}, <4 x i32>* [[TMP]], align 1
+  double sum = fixed;
+  sum = sum + c5.x + c5.y;
+  return sum;
+}
+
+double fixed_5s(__short5 *in) {
+// CHECK: fixed_5s
+// CHECK: call double @args_vec_5s(i32 5, <4 x i32> {{%.*}})
+  return args_vec_5s(5, *in);
+}
+
+__attribute__((noinline)) double args_vec_3i(int fixed, __int3 c3) {
+// CHECK: args_vec_3i
+// CHECK: [[C3:%.*]] = alloca <3 x i32>, align 16
+// CHECK: [[TMP:%.*]] = bitcast <3 x i32>* [[C3]] to <4 x i32>*
+// CHECK: store <4 x i32> {{%.*}}, <4 x i32>* [[TMP]], align 1
+  double sum = fixed;
+  sum = sum + c3.x + c3.y;
+  return sum;
+}
+
+double fixed_3i(__int3 *in) {
+// CHECK: fixed_3i
+// CHECK: call double @args_vec_3i(i32 3, <4 x i32> {{%.*}})
+  return args_vec_3i(3, *in);
+}
+
+__attribute__((noinline)) double args_vec_5i(int fixed, __int5 c5) {
+// CHECK: args_vec_5i
+// CHECK: [[C5:%.*]] = load <5 x i32>* {{%.*}}, align 16
+  double sum = fixed;
+  sum = sum + c5.x + c5.y;
+  return sum;
+}
+
+double fixed_5i(__int5 *in) {
+// CHECK: fixed_5i
+// CHECK: call double @args_vec_5i(i32 5, <5 x i32>* {{%.*}})
+  return args_vec_5i(5, *in);
+}
+
+__attribute__((noinline)) double args_vec_3d(int fixed, __double3 c3) {
+// CHECK: args_vec_3d
+// CHECK: [[CAST:%.*]] = bitcast <3 x double>* {{%.*}} to <4 x double>*
+// CHECK: [[LOAD:%.*]] = load <4 x double>* [[CAST]]
+// CHECK: shufflevector <4 x double> [[LOAD]], <4 x double> undef, <3 x i32> <i32 0, i32 1, i32 2>
+  double sum = fixed;
+  sum = sum + c3.x + c3.y;
+  return sum;
+}
+
+double fixed_3d(__double3 *in) {
+// CHECK: fixed_3d
+// CHECK: call double @args_vec_3d(i32 3, <3 x double>* {{%.*}})
+  return args_vec_3d(3, *in);
+}