================
@@ -0,0 +1,104 @@
+// RUN: %clang_cc1 -triple sparc-unknown-linux-gnu -emit-llvm -o - %s \
+// RUN: | FileCheck %s --check-prefix=V8
+// RUN: %clang_cc1 -triple sparcv9-unknown-linux-gnu -emit-llvm -o - %s \
+// RUN: | FileCheck %s --check-prefix=V9
+
+// RUN: %clang_cc1 -triple sparc-unknown-linux-gnu -fclang-abi-compat=23 \
+// RUN: -emit-llvm -o - %s | FileCheck %s --check-prefix=COMPAT23-V8
+// RUN: %clang_cc1 -triple sparcv9-unknown-linux-gnu -fclang-abi-compat=23 \
+// RUN: -emit-llvm -o - %s | FileCheck %s --check-prefix=COMPAT23-V9
+
+// Test how SPARC passes and returns `_Complex` values.
+
+// Returns.
+//
+// A `_Complex` value with an integer element type is returned packed into
whole
+// integer registers. Clang 23 and before instead gave each part a register of
+// its own on v8, and on v9 left-justified a value narrower than a register the
+// way a small struct is returned. The new behavior matches GCC.
+
+// COMPAT23-V8-LABEL: define{{.*}} { i8, i8 } @ret_complex_char(
+// V8-LABEL: define{{.*}} i16 @ret_complex_char(
+// COMPAT23-V9-LABEL: define{{.*}} i64 @ret_complex_char(
+// V9-LABEL: define{{.*}} i16 @ret_complex_char(
+_Complex char ret_complex_char(void) { return 0; }
+
+// COMPAT23-V8-LABEL: define{{.*}} { i16, i16 } @ret_complex_short(
+// V8-LABEL: define{{.*}} i32 @ret_complex_short(
+// COMPAT23-V9-LABEL: define{{.*}} i64 @ret_complex_short(
+// V9-LABEL: define{{.*}} i32 @ret_complex_short(
+_Complex short ret_complex_short(void) { return 0; }
+
+// COMPAT23-V8-LABEL: define{{.*}} { i32, i32 } @ret_complex_int(
+// V8-LABEL: define{{.*}} i64 @ret_complex_int(
+// COMPAT23-V9-LABEL: define{{.*}} i64 @ret_complex_int(
+// V9-LABEL: define{{.*}} i64 @ret_complex_int(
+_Complex int ret_complex_int(void) { return 0; }
+
+// COMPAT23-V8-LABEL: define{{.*}} { i64, i64 } @ret_complex_long_long(
+// V8-LABEL: define{{.*}} { i64, i64 } @ret_complex_long_long(
+// COMPAT23-V9-LABEL: define{{.*}} { i64, i64 } @ret_complex_long_long(
+// V9-LABEL: define{{.*}} { i64, i64 } @ret_complex_long_long(
+_Complex long long ret_complex_long_long(void) { return 0; }
----------------
s-barannikov wrote:
Missing _Complex long test.
https://github.com/llvm/llvm-project/pull/212340
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