[clang] [clang][PowerPC] Add flag to enable compatibility with GNU for complex arguments (PR #77732)

[zhijian lin via cfe-commits]

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@@ -0,0 +1,306 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2
+
+// RUN: %clang_cc1 -triple powerpc-unknown-linux-gnu \
+// RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK-DEF
+// RUN: %clang_cc1 -triple powerpc-unknown-linux-gnu -fcomplex-ppc-gnu-abi \
+// RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK-GNU
+
+// CHECK-DEF-LABEL: define dso_local void @foo1
+// CHECK-DEF-SAME: (ptr dead_on_unwind noalias writable sret({ float, float }) align 4 [[AGG_RESULT:%.*]], ptr noundef byval({ float, float }) align 4 [[X:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-DEF-NEXT:  entry:
+// CHECK-DEF-NEXT:    [[X_REALP:%.*]] = getelementptr inbounds { float, float }, ptr [[X]], i32 0, i32 0
+// CHECK-DEF-NEXT:    [[X_REAL:%.*]] = load float, ptr [[X_REALP]], align 4
+// CHECK-DEF-NEXT:    [[X_IMAGP:%.*]] = getelementptr inbounds { float, float }, ptr [[X]], i32 0, i32 1
+// CHECK-DEF-NEXT:    [[X_IMAG:%.*]] = load float, ptr [[X_IMAGP]], align 4
+// CHECK-DEF-NEXT:    [[AGG_RESULT_REALP:%.*]] = getelementptr inbounds { float, float }, ptr [[AGG_RESULT]], i32 0, i32 0
+// CHECK-DEF-NEXT:    [[AGG_RESULT_IMAGP:%.*]] = getelementptr inbounds { float, float }, ptr [[AGG_RESULT]], i32 0, i32 1
+// CHECK-DEF-NEXT:    store float [[X_REAL]], ptr [[AGG_RESULT_REALP]], align 4
+// CHECK-DEF-NEXT:    store float [[X_IMAG]], ptr [[AGG_RESULT_IMAGP]], align 4
+// CHECK-DEF-NEXT:    [[AGG_RESULT_REALP1:%.*]] = getelementptr inbounds { float, float }, ptr [[AGG_RESULT]], i32 0, i32 0
+// CHECK-DEF-NEXT:    [[AGG_RESULT_REAL:%.*]] = load float, ptr [[AGG_RESULT_REALP1]], align 4
+// CHECK-DEF-NEXT:    [[AGG_RESULT_IMAGP2:%.*]] = getelementptr inbounds { float, float }, ptr [[AGG_RESULT]], i32 0, i32 1
+// CHECK-DEF-NEXT:    [[AGG_RESULT_IMAG:%.*]] = load float, ptr [[AGG_RESULT_IMAGP2]], align 4
+// CHECK-DEF-NEXT:    [[AGG_RESULT_REALP3:%.*]] = getelementptr inbounds { float, float }, ptr [[AGG_RESULT]], i32 0, i32 0
+// CHECK-DEF-NEXT:    [[AGG_RESULT_IMAGP4:%.*]] = getelementptr inbounds { float, float }, ptr [[AGG_RESULT]], i32 0, i32 1
+// CHECK-DEF-NEXT:    store float [[AGG_RESULT_REAL]], ptr [[AGG_RESULT_REALP3]], align 4
+// CHECK-DEF-NEXT:    store float [[AGG_RESULT_IMAG]], ptr [[AGG_RESULT_IMAGP4]], align 4
+// CHECK-DEF-NEXT:    ret void
+//
+// CHECK-GNU-LABEL: define dso_local [1 x i64] @foo1
+// CHECK-GNU-SAME: ([1 x i64] noundef [[X_COERCE:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-GNU-NEXT:  entry:
+// CHECK-GNU-NEXT:    [[RETVAL:%.*]] = alloca { float, float }, align 4
+// CHECK-GNU-NEXT:    [[X:%.*]] = alloca { float, float }, align 4
+// CHECK-GNU-NEXT:    store [1 x i64] [[X_COERCE]], ptr [[X]], align 4
+// CHECK-GNU-NEXT:    [[X_REALP:%.*]] = getelementptr inbounds { float, float }, ptr [[X]], i32 0, i32 0
+// CHECK-GNU-NEXT:    [[X_REAL:%.*]] = load float, ptr [[X_REALP]], align 4
+// CHECK-GNU-NEXT:    [[X_IMAGP:%.*]] = getelementptr inbounds { float, float }, ptr [[X]], i32 0, i32 1
+// CHECK-GNU-NEXT:    [[X_IMAG:%.*]] = load float, ptr [[X_IMAGP]], align 4
+// CHECK-GNU-NEXT:    [[RETVAL_REALP:%.*]] = getelementptr inbounds { float, float }, ptr [[RETVAL]], i32 0, i32 0
+// CHECK-GNU-NEXT:    [[RETVAL_IMAGP:%.*]] = getelementptr inbounds { float, float }, ptr [[RETVAL]], i32 0, i32 1
+// CHECK-GNU-NEXT:    store float [[X_REAL]], ptr [[RETVAL_REALP]], align 4
+// CHECK-GNU-NEXT:    store float [[X_IMAG]], ptr [[RETVAL_IMAGP]], align 4
+// CHECK-GNU-NEXT:    [[TMP0:%.*]] = load [1 x i64], ptr [[RETVAL]], align 4
+// CHECK-GNU-NEXT:    ret [1 x i64] [[TMP0]]
+//
+_Complex float foo1(_Complex float x) {
----------------
diggerlin wrote:

general question for all test scenario: 

can you add a caller function to call the function to check whether organize the call parameter and pass the parameter as called function need ? 

   

https://github.com/llvm/llvm-project/pull/77732