[builtin] Fixed definitions of builtins that rely on the int/long long type is 32/64 bits

Summary:
The definition of the builtins __builtin_bswap32, __builtin_bitreverse32, __builtin_rotateleft32 and __builtin_rotateright32 rely on that the int type is 32 bits wide on the target.
The defintions of the builtins __builtin_bswap64, __builtin_bitreverse64, __builtin_rotateleft64, and __builtin_rotateright64 rely on that the long long type is 64 bits wide.

On targets where this is not the case (e.g. AVR) clang will generate faulty code (wrong llvm assembler intrinsics).

This patch add support for using 'Z' (the int32_t type) in Bultins.def. The builtins above are changed to be based on the int32_t type instead of the int type, and the int64_t type instead of the long long type.

The AVR backend (experimental) have a native int type that is only 16 bits wide. The supplied testcase will therefore fail if running the testcase on trunk as clang will convert e.g. __builtin_bitreverse32 into llvm.bitreverse.i16 on AVR.

Reviewers: dylanmckay, spatel, rsmith, efriedma

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D61845

llvm-svn: 360863

1 files changed, 102 insertions, 0 deletions

diff --git a/clang/test/CodeGen/avr-builtins.c b/clang/test/CodeGen/avr-builtins.c
new file mode 100644
index 00000000000..cbba6b2f2a2
--- /dev/null
+++ b/clang/test/CodeGen/avr-builtins.c
@@ -0,0 +1,102 @@
+// RUN: %clang_cc1 -triple avr-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+unsigned char bitrev8(unsigned char data) {
+    return __builtin_bitreverse8(data);
+}
+
+// CHECK: define zeroext i8 @bitrev8
+// CHECK: i8 @llvm.bitreverse.i8(i8
+
+unsigned int bitrev16(unsigned int data) {
+    return __builtin_bitreverse16(data);
+}
+
+// CHECK: define i16 @bitrev16
+// CHECK: i16 @llvm.bitreverse.i16(i16
+
+unsigned long bitrev32(unsigned long data) {
+    return __builtin_bitreverse32(data);
+}
+// CHECK: define i32 @bitrev32
+// CHECK: i32 @llvm.bitreverse.i32(i32
+
+unsigned long long bitrev64(unsigned long long data) {
+    return __builtin_bitreverse64(data);
+}
+
+// CHECK: define i64 @bitrev64
+// CHECK: i64 @llvm.bitreverse.i64(i64
+
+unsigned char rotleft8(unsigned char x, unsigned char y) {
+    return __builtin_rotateleft8(x, y);
+}
+
+// CHECK: define zeroext i8 @rotleft8
+// CHECK: i8 @llvm.fshl.i8(i8
+
+unsigned int rotleft16(unsigned int x, unsigned int y) {
+    return __builtin_rotateleft16(x, y);
+}
+
+// CHECK: define i16 @rotleft16
+// CHECK: i16 @llvm.fshl.i16(i16
+
+unsigned long rotleft32(unsigned long x, unsigned long y) {
+    return __builtin_rotateleft32(x, y);
+}
+// CHECK: define i32 @rotleft32
+// CHECK: i32 @llvm.fshl.i32(i32
+
+unsigned long long rotleft64(unsigned long long x, unsigned long long y) {
+    return __builtin_rotateleft64(x, y);
+}
+
+// CHECK: define i64 @rotleft64
+// CHECK: i64 @llvm.fshl.i64(i64
+
+unsigned char rotright8(unsigned char x, unsigned char y) {
+    return __builtin_rotateright8(x, y);
+}
+
+// CHECK: define zeroext i8 @rotright8
+// CHECK: i8 @llvm.fshr.i8(i8
+
+unsigned int rotright16(unsigned int x, unsigned int y) {
+    return __builtin_rotateright16(x, y);
+}
+
+// CHECK: define i16 @rotright16
+// CHECK: i16 @llvm.fshr.i16(i16
+
+unsigned long rotright32(unsigned long x, unsigned long y) {
+    return __builtin_rotateright32(x, y);
+}
+// CHECK: define i32 @rotright32
+// CHECK: i32 @llvm.fshr.i32(i32
+
+unsigned long long rotright64(unsigned long long x, unsigned long long y) {
+    return __builtin_rotateright64(x, y);
+}
+
+// CHECK: define i64 @rotright64
+// CHECK: i64 @llvm.fshr.i64(i64
+
+unsigned int byteswap16(unsigned int x) {
+    return __builtin_bswap16(x);
+}
+
+// CHECK: define i16 @byteswap16
+// CHECK: i16 @llvm.bswap.i16(i16
+
+unsigned long byteswap32(unsigned long x) {
+    return __builtin_bswap32(x);
+}
+// CHECK: define i32 @byteswap32
+// CHECK: i32 @llvm.bswap.i32(i32
+
+unsigned long long byteswap64(unsigned long long x) {
+    return __builtin_bswap64(x);
+}
+
+// CHECK: define i64 @byteswap64
+// CHECK: i64 @llvm.bswap.i64(i64