[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 +1,350 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 2
+
+// RUN: %clang_cc1 -triple powerpc-unknown-linux-gnu -fcomplex-ppc-gnu-abi \
+// RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK-GNU-DEF
+// RUN: %clang_cc1 -msoft-float  -mfloat-abi soft -triple powerpc-unknown-linux-gnu -fcomplex-ppc-gnu-abi \
+// RUN:   -emit-llvm %s -o - | FileCheck %s --check-prefix=CHECK-GNU-SOFT-FLOAT
+
+// CHECK-GNU-DEF-LABEL: define dso_local [4 x i32] @_cdouble
+// CHECK-GNU-DEF-SAME: ([4 x i32] noundef [[X_COERCE:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-GNU-DEF-NEXT:  entry:
+// CHECK-GNU-DEF-NEXT:    [[RETVAL:%.*]] = alloca { double, double }, align 8
+// CHECK-GNU-DEF-NEXT:    [[X:%.*]] = alloca { double, double }, align 8
+// CHECK-GNU-DEF-NEXT:    store [4 x i32] [[X_COERCE]], ptr [[X]], align 8
+// CHECK-GNU-DEF-NEXT:    [[X_REALP:%.*]] = getelementptr inbounds { double, double }, ptr [[X]], i32 0, i32 0
+// CHECK-GNU-DEF-NEXT:    [[X_REAL:%.*]] = load double, ptr [[X_REALP]], align 8
+// CHECK-GNU-DEF-NEXT:    [[X_IMAGP:%.*]] = getelementptr inbounds { double, double }, ptr [[X]], i32 0, i32 1
+// CHECK-GNU-DEF-NEXT:    [[X_IMAG:%.*]] = load double, ptr [[X_IMAGP]], align 8
+// CHECK-GNU-DEF-NEXT:    [[RETVAL_REALP:%.*]] = getelementptr inbounds { double, double }, ptr [[RETVAL]], i32 0, i32 0
+// CHECK-GNU-DEF-NEXT:    [[RETVAL_IMAGP:%.*]] = getelementptr inbounds { double, double }, ptr [[RETVAL]], i32 0, i32 1
+// CHECK-GNU-DEF-NEXT:    store double [[X_REAL]], ptr [[RETVAL_REALP]], align 8
+// CHECK-GNU-DEF-NEXT:    store double [[X_IMAG]], ptr [[RETVAL_IMAGP]], align 8
+// CHECK-GNU-DEF-NEXT:    [[TMP0:%.*]] = load [4 x i32], ptr [[RETVAL]], align 8
+// CHECK-GNU-DEF-NEXT:    ret [4 x i32] [[TMP0]]
+//
+// CHECK-GNU-SOFT-FLOAT-LABEL: define dso_local [4 x i32] @_cdouble
+// CHECK-GNU-SOFT-FLOAT-SAME: ([4 x i32] noundef [[X_COERCE:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-GNU-SOFT-FLOAT-NEXT:  entry:
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[RETVAL:%.*]] = alloca { double, double }, align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[X:%.*]] = alloca { double, double }, align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    store [4 x i32] [[X_COERCE]], ptr [[X]], align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[X_REALP:%.*]] = getelementptr inbounds { double, double }, ptr [[X]], i32 0, i32 0
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[X_REAL:%.*]] = load double, ptr [[X_REALP]], align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[X_IMAGP:%.*]] = getelementptr inbounds { double, double }, ptr [[X]], i32 0, i32 1
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[X_IMAG:%.*]] = load double, ptr [[X_IMAGP]], align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[RETVAL_REALP:%.*]] = getelementptr inbounds { double, double }, ptr [[RETVAL]], i32 0, i32 0
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[RETVAL_IMAGP:%.*]] = getelementptr inbounds { double, double }, ptr [[RETVAL]], i32 0, i32 1
+// CHECK-GNU-SOFT-FLOAT-NEXT:    store double [[X_REAL]], ptr [[RETVAL_REALP]], align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    store double [[X_IMAG]], ptr [[RETVAL_IMAGP]], align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    [[TMP0:%.*]] = load [4 x i32], ptr [[RETVAL]], align 8
+// CHECK-GNU-SOFT-FLOAT-NEXT:    ret [4 x i32] [[TMP0]]
+//
+_Complex double _cdouble(_Complex double x) {
----------------
diggerlin wrote:

there is not float or double as parameter in the test case , I think we have tested the  scenario in the ppc32-complex-gnu-abi.c 
, do we still need it ?


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