[clang] [clang][test] Fix builtin-rotate.c failure on ARM32 (PR #177290)

[Simon Pilgrim via cfe-commits]

https://github.com/RKSimon updated https://github.com/llvm/llvm-project/pull/177290

>From fe72f2aabf37ebbc585dd3ac3d1d06fd15f3e824 Mon Sep 17 00:00:00 2001
From: NagaChaitanya Vellanki <pnagato at protonmail.com>
Date: Wed, 21 Jan 2026 16:32:41 -0800
Subject: [PATCH 1/2] [clang][test] Fix builtin-rotate.c failure on ARM32

Replace unsigned __int128 with unsigned _BitInt(128) since __int128 is
not supported on ARM 32-bit targets.

Fixes https://lab.llvm.org/buildbot/#/builders/79/builds/2754
---
 clang/test/CodeGen/builtin-rotate.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/clang/test/CodeGen/builtin-rotate.c b/clang/test/CodeGen/builtin-rotate.c
index 1f498c0294a58..4467b29c06197 100644
--- a/clang/test/CodeGen/builtin-rotate.c
+++ b/clang/test/CodeGen/builtin-rotate.c
@@ -95,7 +95,7 @@ long long rotr64(long long x, unsigned long long y) {
 // CHECK:  call i8 @llvm.fshl.i8(i8 %{{.*}}, i8 %{{.*}}, i8 0)
 void test_builtin_stdc_rotate_left(uint8_t u8, uint16_t u16,
                                    uint32_t u32, uint64_t u64,
-                                   uint64_t u64_2, unsigned __int128 u128,
+                                   uint64_t u64_2, unsigned _BitInt(128) u128,
                                    unsigned _BitInt(9) u9, unsigned _BitInt(37) u37,
                                    unsigned _BitInt(10) u10, unsigned _BitInt(16) u16_bit,
                                    unsigned _BitInt(24) u24, unsigned _BitInt(48) u48) {
@@ -105,7 +105,7 @@ void test_builtin_stdc_rotate_left(uint8_t u8, uint16_t u16,
   volatile uint32_t result_u32;
   volatile uint64_t result_u64;
   volatile uint64_t result_u64_2;
-  volatile unsigned __int128 result_u128;
+  volatile unsigned _BitInt(128) result_u128;
   volatile unsigned _BitInt(9) result_u9;
   volatile unsigned _BitInt(37) result_u37;
   volatile unsigned _BitInt(10) result_u10;
@@ -187,7 +187,7 @@ void test_builtin_stdc_rotate_left(uint8_t u8, uint16_t u16,
 // CHECK:  call i16 @llvm.fshl.i16(i16 %{{.*}}, i16 %{{.*}}, i16 1)
 void test_builtin_stdc_rotate_right(uint8_t u8, uint16_t u16,
                                     uint32_t u32, uint64_t u64,
-                                    uint64_t u64_2, unsigned __int128 u128,
+                                    uint64_t u64_2, unsigned _BitInt(128) u128,
                                     unsigned _BitInt(9) u9, unsigned _BitInt(12) u12,
                                     unsigned _BitInt(20) u20, unsigned _BitInt(32) u32_bit) {
 
@@ -196,7 +196,7 @@ void test_builtin_stdc_rotate_right(uint8_t u8, uint16_t u16,
   volatile uint32_t result_u32;
   volatile uint64_t result_u64;
   volatile uint64_t result_u64_2;
-  volatile unsigned __int128 result_u128;
+  volatile unsigned _BitInt(128) result_u128;
   volatile unsigned _BitInt(9) result_u9;
   volatile unsigned _BitInt(12) result_u12;
   volatile unsigned _BitInt(20) result_u20;

>From 632c6985b5e2f845bca0653feeb4cbd64381bc8e Mon Sep 17 00:00:00 2001
From: NagaChaitanya Vellanki <pnagato at protonmail.com>
Date: Thu, 22 Jan 2026 11:53:48 -0800
Subject: [PATCH 2/2] Keep __int128 coverage as well

---
 clang/test/CodeGen/builtin-rotate.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/clang/test/CodeGen/builtin-rotate.c b/clang/test/CodeGen/builtin-rotate.c
index 4467b29c06197..c64e2ad14955c 100644
--- a/clang/test/CodeGen/builtin-rotate.c
+++ b/clang/test/CodeGen/builtin-rotate.c
@@ -302,3 +302,13 @@ void test_wider_shift_amount(uint8_t u8, uint16_t u16, uint32_t u32, unsigned _B
   result_u9 = __builtin_stdc_rotate_left((unsigned _BitInt(9))0x1FF, (int64_t)-2147483647);
 }
 
+#ifdef __SIZEOF_INT128__
+// CHECK-LABEL: test_int128_rotate
+// CHECK:  call i128 @llvm.fshl.i128(i128 %{{.*}}, i128 %{{.*}}, i128 32)
+// CHECK:  call i128 @llvm.fshr.i128(i128 %{{.*}}, i128 %{{.*}}, i128 32)
+void test_int128_rotate(unsigned __int128 u128) {
+  volatile unsigned __int128 result_u128;
+  result_u128 = __builtin_stdc_rotate_left(u128, 32);
+  result_u128 = __builtin_stdc_rotate_right(u128, 32);
+}
+#endif