[CIR] Upstream __builtin_cimag for ComplexType #147808
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@llvm/pr-subscribers-clangir Author: Amr Hesham (AmrDeveloper) ChangesUpstream __builtin_cimag support for ComplexType Full diff: https://github.com/llvm/llvm-project/pull/147808.diff 2 Files Affected:
diff --git a/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp b/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
index 1e56ea4d9bd8e..c65873209c31d 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
@@ -128,6 +128,17 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl &gd, unsigned builtinID,
return RValue::get(real);
}
+ case Builtin::BI__builtin_cimag:
+ case Builtin::BI__builtin_cimagf:
+ case Builtin::BI__builtin_cimagl:
+ case Builtin::BIcimag:
+ case Builtin::BIcimagf:
+ case Builtin::BIcimagl: {
+ mlir::Value complex = emitComplexExpr(e->getArg(0));
+ mlir::Value imag = builder.createComplexImag(loc, complex);
+ return RValue::get(imag);
+ }
+
case Builtin::BI__builtin_clrsb:
case Builtin::BI__builtin_clrsbl:
case Builtin::BI__builtin_clrsbll:
diff --git a/clang/test/CIR/CodeGen/complex-builtins.cpp b/clang/test/CIR/CodeGen/complex-builtins.cpp
index fdda5eb707fb7..f0d12d0ef6663 100644
--- a/clang/test/CIR/CodeGen/complex-builtins.cpp
+++ b/clang/test/CIR/CodeGen/complex-builtins.cpp
@@ -58,3 +58,28 @@ void foo2() {
// OGCG: %[[A_IMAG_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[COMPLEX]], i32 0, i32 1
// OGCG: %[[A_IMAG:.*]] = load double, ptr %[[A_IMAG_PTR]], align 8
// OGCG: store double %[[A_REAL]], ptr %[[INIT]], align 8
+
+void foo3() {
+ double _Complex a;
+ double imag = __builtin_cimag(a);
+}
+
+// CIR: %[[COMPLEX:.*]] = cir.alloca !cir.complex<!cir.double>, !cir.ptr<!cir.complex<!cir.double>>, ["a"]
+// CIR: %[[INIT:.*]] = cir.alloca !cir.double, !cir.ptr<!cir.double>, ["imag", init]
+// CIR: %[[TMP:.*]] = cir.load{{.*}} %[[COMPLEX]] : !cir.ptr<!cir.complex<!cir.double>>, !cir.complex<!cir.double>
+// CIR: %[[IMAG:.*]] = cir.complex.imag %[[TMP]] : !cir.complex<!cir.double> -> !cir.double
+// CIR: cir.store{{.*}} %[[IMAG]], %[[INIT]] : !cir.double, !cir.ptr<!cir.double>
+
+// LLVM: %[[COMPLEX:.*]] = alloca { double, double }, i64 1, align 8
+// LLVM: %[[INIT:.*]] = alloca double, i64 1, align 8
+// LLVM: %[[TMP:.*]] = load { double, double }, ptr %[[COMPLEX]], align 8
+// LLVM: %[[IMAG:.*]] = extractvalue { double, double } %[[TMP]], 1
+// LLVM: store double %[[IMAG]], ptr %[[INIT]], align 8
+
+// OGCG: %[[COMPLEX:.*]] = alloca { double, double }, align 8
+// OGCG: %[[INIT:.*]] = alloca double, align 8
+// OGCG: %[[A_REAL_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[COMPLEX]], i32 0, i32 0
+// OGCG: %[[A_REAL:.*]] = load double, ptr %[[A_REAL_PTR]], align 8
+// OGCG: %[[A_IMAG_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[COMPLEX]], i32 0, i32 1
+// OGCG: %[[A_IMAG:.*]] = load double, ptr %[[A_IMAG_PTR]], align 8
+// OGCG: store double %[[A_IMAG]], ptr %[[INIT]], align 8
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@llvm/pr-subscribers-clang Author: Amr Hesham (AmrDeveloper) ChangesUpstream __builtin_cimag support for ComplexType Full diff: https://github.com/llvm/llvm-project/pull/147808.diff 2 Files Affected:
diff --git a/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp b/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
index 1e56ea4d9bd8e..c65873209c31d 100644
--- a/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp
@@ -128,6 +128,17 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl &gd, unsigned builtinID,
return RValue::get(real);
}
+ case Builtin::BI__builtin_cimag:
+ case Builtin::BI__builtin_cimagf:
+ case Builtin::BI__builtin_cimagl:
+ case Builtin::BIcimag:
+ case Builtin::BIcimagf:
+ case Builtin::BIcimagl: {
+ mlir::Value complex = emitComplexExpr(e->getArg(0));
+ mlir::Value imag = builder.createComplexImag(loc, complex);
+ return RValue::get(imag);
+ }
+
case Builtin::BI__builtin_clrsb:
case Builtin::BI__builtin_clrsbl:
case Builtin::BI__builtin_clrsbll:
diff --git a/clang/test/CIR/CodeGen/complex-builtins.cpp b/clang/test/CIR/CodeGen/complex-builtins.cpp
index fdda5eb707fb7..f0d12d0ef6663 100644
--- a/clang/test/CIR/CodeGen/complex-builtins.cpp
+++ b/clang/test/CIR/CodeGen/complex-builtins.cpp
@@ -58,3 +58,28 @@ void foo2() {
// OGCG: %[[A_IMAG_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[COMPLEX]], i32 0, i32 1
// OGCG: %[[A_IMAG:.*]] = load double, ptr %[[A_IMAG_PTR]], align 8
// OGCG: store double %[[A_REAL]], ptr %[[INIT]], align 8
+
+void foo3() {
+ double _Complex a;
+ double imag = __builtin_cimag(a);
+}
+
+// CIR: %[[COMPLEX:.*]] = cir.alloca !cir.complex<!cir.double>, !cir.ptr<!cir.complex<!cir.double>>, ["a"]
+// CIR: %[[INIT:.*]] = cir.alloca !cir.double, !cir.ptr<!cir.double>, ["imag", init]
+// CIR: %[[TMP:.*]] = cir.load{{.*}} %[[COMPLEX]] : !cir.ptr<!cir.complex<!cir.double>>, !cir.complex<!cir.double>
+// CIR: %[[IMAG:.*]] = cir.complex.imag %[[TMP]] : !cir.complex<!cir.double> -> !cir.double
+// CIR: cir.store{{.*}} %[[IMAG]], %[[INIT]] : !cir.double, !cir.ptr<!cir.double>
+
+// LLVM: %[[COMPLEX:.*]] = alloca { double, double }, i64 1, align 8
+// LLVM: %[[INIT:.*]] = alloca double, i64 1, align 8
+// LLVM: %[[TMP:.*]] = load { double, double }, ptr %[[COMPLEX]], align 8
+// LLVM: %[[IMAG:.*]] = extractvalue { double, double } %[[TMP]], 1
+// LLVM: store double %[[IMAG]], ptr %[[INIT]], align 8
+
+// OGCG: %[[COMPLEX:.*]] = alloca { double, double }, align 8
+// OGCG: %[[INIT:.*]] = alloca double, align 8
+// OGCG: %[[A_REAL_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[COMPLEX]], i32 0, i32 0
+// OGCG: %[[A_REAL:.*]] = load double, ptr %[[A_REAL_PTR]], align 8
+// OGCG: %[[A_IMAG_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[COMPLEX]], i32 0, i32 1
+// OGCG: %[[A_IMAG:.*]] = load double, ptr %[[A_IMAG_PTR]], align 8
+// OGCG: store double %[[A_IMAG]], ptr %[[INIT]], align 8
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erichkeane
approved these changes
Jul 9, 2025
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Upstream __builtin_cimag support for ComplexType
#141365