Change signature of __builtin_rotateright64 back to unsigned

[Ka-Ka]

Summary

The signature of __builtin_rotateright64 was by misstake changed from
unsigned to signed in r360863, this patch will change it back to
unsigned as intended.

This fixes pr43309

[hans]

A simpler way to test this might be to check for conversion warnings in the existing clang/test/CodeGen/avr-builtins.c test, for example as below. I think that's better since it covers more of the signatures, e.g. the rotateleft ones too.

diff --git a/clang/test/CodeGen/avr-builtins.c b/clang/test/CodeGen/avr-builtins.c
index cbba6b2f2a2..0d9ce91ad69 100644
--- a/clang/test/CodeGen/avr-builtins.c
+++ b/clang/test/CodeGen/avr-builtins.c
@@ -1,5 +1,9 @@
 // RUN: %clang_cc1 -triple avr-unknown-unknown -emit-llvm -o - %s | FileCheck %s
 
+// Check that the parameter types match.
+// RUN: %clang_cc1 -triple avr-unknown-unknown -Wconversion -verify %s
+// expected-no-diagnostics
+
 unsigned char bitrev8(unsigned char data) {
     return __builtin_bitreverse8(data);
 }

[Ka-Ka]

Update testcases according to review comment.

[hans]

Looks good to me! (with comment)

test/CodeGen/avr-builtins.c

3

Sorry, I didn't put this in my example, but maybe also mention the Bug number here.

include/clang/Basic/Builtins.def

 
 BUILTIN(__builtin_rotateleft8, "UcUcUc", "nc")
 BUILTIN(__builtin_rotateleft16, "UsUsUs", "nc")
 BUILTIN(__builtin_rotateleft32, "UZiUZiUZi", "nc")
 BUILTIN(__builtin_rotateleft64, "UWiUWiUWi", "nc")
 BUILTIN(__builtin_rotateright8, "UcUcUc", "nc")
 BUILTIN(__builtin_rotateright16, "UsUsUs", "nc")
 BUILTIN(__builtin_rotateright32, "UZiUZiUZi", "nc")
-BUILTIN(__builtin_rotateright64, "UWiUWiWi", "nc")
+BUILTIN(__builtin_rotateright64, "UWiUWiUWi", "nc")
 
 // Random GCC builtins
 BUILTIN(__builtin_constant_p, "i.", "nctu")
 BUILTIN(__builtin_classify_type, "i.", "nctu")
 BUILTIN(__builtin___CFStringMakeConstantString, "FC*cC*", "nc")
 BUILTIN(__builtin___NSStringMakeConstantString, "FC*cC*", "nc")
 BUILTIN(__builtin_va_start, "vA.", "nt")
 BUILTIN(__builtin_va_end, "vA", "n")

test/CodeGen/avr-builtins.c

 // RUN: %clang_cc1 -triple avr-unknown-unknown -emit-llvm -o - %s | FileCheck %s
 
+// Check that the parameter types match.
+// RUN: %clang_cc1 -triple avr-unknown-unknown -Wconversion -verify %s
+// expected-no-diagnostics
+
 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) {