[AIX] Update fetch_and_add type

[jsji]

Summary

It turns out that the AIX kernel is defining int instead of unsigned int for fetch_and_add.

Legacy XL also defines this to be signed.

https://www.ibm.com/docs/en/aix/7.2?topic=f-fetch-add-kernel-services

So update the type for compat.

[hubert.reinterpretcast]

Thanks. LGTM with minor nits.

clang/test/CodeGen/builtins-ppc-xlcompat-fetch.c

19

34

[jsji]

Update tests.

clang/include/clang/Basic/BuiltinsPPC.def

 BUILTIN(__builtin_ppc_fsel, "dddd", "")
 BUILTIN(__builtin_ppc_fsels, "ffff", "")
 BUILTIN(__builtin_ppc_frsqrte, "dd", "")
 BUILTIN(__builtin_ppc_frsqrtes, "ff", "")
 BUILTIN(__builtin_ppc_fsqrt, "dd", "")
 BUILTIN(__builtin_ppc_fsqrts, "ff", "")
 BUILTIN(__builtin_ppc_compare_and_swap, "iiD*i*i", "")
 BUILTIN(__builtin_ppc_compare_and_swaplp, "iLiD*Li*Li", "")
-BUILTIN(__builtin_ppc_fetch_and_add, "UiUiD*Ui", "")
-BUILTIN(__builtin_ppc_fetch_and_addlp, "ULiULiD*ULi", "")
+BUILTIN(__builtin_ppc_fetch_and_add, "iiD*i", "")
+BUILTIN(__builtin_ppc_fetch_and_addlp, "LiLiD*Li", "")
 BUILTIN(__builtin_ppc_fetch_and_and, "UiUiD*Ui", "")
 BUILTIN(__builtin_ppc_fetch_and_andlp, "ULiULiD*ULi", "")
 BUILTIN(__builtin_ppc_fetch_and_or, "UiUiD*Ui", "")
 BUILTIN(__builtin_ppc_fetch_and_orlp, "ULiULiD*ULi", "")
 BUILTIN(__builtin_ppc_fetch_and_swap, "UiUiD*Ui", "")
 BUILTIN(__builtin_ppc_fetch_and_swaplp, "ULiULiD*ULi", "")
 BUILTIN(__builtin_ppc_ldarx, "LiLiD*", "")
 BUILTIN(__builtin_ppc_lwarx, "iiD*", "")

clang/test/CodeGen/builtins-ppc-xlcompat-fetch-error.c

+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
 // REQUIRES: powerpc-registered-target
 // RUN: %clang_cc1 -triple powerpc64-unknown-aix -target-cpu pwr8 \
 // RUN:  -verify %s
 
 void test_builtin_ppc_fetch_and_add2() {
-  volatile int a = 0;
+  volatile unsigned int a = 0;
   unsigned int b = 0;
 
-  __fetch_and_add(&a, b); // expected-warning {{passing 'volatile int *' to parameter of type 'volatile unsigned int *' converts between pointers to integer types with different sign}}
+  __fetch_and_add(&a, b); // expected-warning {{passing 'volatile unsigned int *' to parameter of type 'volatile int *' converts between pointers to integer types with different sign}}
 }
 
 void test_builtin_ppc_fetch_and_addlp() {
-  volatile long a = 0;
+  volatile unsigned long a = 0;
   unsigned long b = 0;
 
-  __fetch_and_addlp(&a, b); // expected-warning {{passing 'volatile long *' to parameter of type 'volatile unsigned long *' converts between pointers to integer types with different sign}}
+  __fetch_and_addlp(&a, b); // expected-warning {{passing 'volatile unsigned long *' to parameter of type 'volatile long *' converts between pointers to integer types with different sign}}
 }

clang/test/CodeGen/builtins-ppc-xlcompat-fetch.c

 // CHECK-NEXT:    [[B_ADDR:%.*]] = alloca i32, align 4
 // CHECK-NEXT:    store i32 [[A:%.*]], i32* [[A_ADDR]], align 4
 // CHECK-NEXT:    store i32 [[B:%.*]], i32* [[B_ADDR]], align 4
 // CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[B_ADDR]], align 4
 // CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[B_ADDR]], align 4
 // CHECK-NEXT:    [[TMP2:%.*]] = atomicrmw add i32* [[A_ADDR]], i32 [[TMP1]] monotonic, align 4
 // CHECK-NEXT:    ret void
 //
-void test_builtin_ppc_fetch_and_add(unsigned int a, unsigned int b) {
+void test_builtin_ppc_fetch_and_add(int a, int b) {
   __fetch_and_add(&a, b);
 }
 
 // CHECK-LABEL: @test_builtin_ppc_fetch_and_addlp(
 // CHECK-NEXT:  entry:
 // CHECK-NEXT:    [[A_ADDR:%.*]] = alloca i64, align 8
 // CHECK-NEXT:    [[B_ADDR:%.*]] = alloca i64, align 8
 // CHECK-NEXT:    store i64 [[A:%.*]], i64* [[A_ADDR]], align 8
 // CHECK-NEXT:    store i64 [[B:%.*]], i64* [[B_ADDR]], align 8
 // CHECK-NEXT:    [[TMP0:%.*]] = load i64, i64* [[B_ADDR]], align 8
 // CHECK-NEXT:    [[TMP1:%.*]] = load i64, i64* [[B_ADDR]], align 8
 // CHECK-NEXT:    [[TMP2:%.*]] = atomicrmw add i64* [[A_ADDR]], i64 [[TMP1]] monotonic, align 8
 // CHECK-NEXT:    ret void
 //
-void test_builtin_ppc_fetch_and_addlp(unsigned long a, unsigned long b) {
+void test_builtin_ppc_fetch_and_addlp(long a, long b) {
   __fetch_and_addlp(&a, b);
 }
 // CHECK-LABEL: @test_builtin_ppc_fetch_and_and(
 // CHECK-NEXT:  entry:
 // CHECK-NEXT:    [[A_ADDR:%.*]] = alloca i32, align 4
 // CHECK-NEXT:    [[B_ADDR:%.*]] = alloca i32, align 4
 // CHECK-NEXT:    store i32 [[A:%.*]], i32* [[A_ADDR]], align 4
 // CHECK-NEXT:    store i32 [[B:%.*]], i32* [[B_ADDR]], align 4