[clang] 04ba344 - [CodeGen] Inline _byteswap_* builtins.
Eli Friedman via cfe-commits
cfe-commits at lists.llvm.org
Wed Mar 16 16:19:06 PDT 2022
Author: Eli Friedman
Date: 2022-03-16T16:18:51-07:00
New Revision: 04ba344176b239c0abc0c9efc8b7524e551e58ed
URL: https://github.com/llvm/llvm-project/commit/04ba344176b239c0abc0c9efc8b7524e551e58ed
DIFF: https://github.com/llvm/llvm-project/commit/04ba344176b239c0abc0c9efc8b7524e551e58ed.diff
LOG: [CodeGen] Inline _byteswap_* builtins.
As discussed in D57915.
Fixes https://github.com/llvm/llvm-project/issues/39999 .
Differential Revision: https://reviews.llvm.org/D121865
Added:
Modified:
clang/lib/CodeGen/CGBuiltin.cpp
clang/test/Headers/ms-arm64-intrin.cpp
Removed:
################################################################################
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index eec4c8089c757..4ca0a1f3c03de 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -2932,7 +2932,10 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
}
case Builtin::BI__builtin_bswap16:
case Builtin::BI__builtin_bswap32:
- case Builtin::BI__builtin_bswap64: {
+ case Builtin::BI__builtin_bswap64:
+ case Builtin::BI_byteswap_ushort:
+ case Builtin::BI_byteswap_ulong:
+ case Builtin::BI_byteswap_uint64: {
return RValue::get(emitUnaryBuiltin(*this, E, Intrinsic::bswap));
}
case Builtin::BI__builtin_bitreverse8:
diff --git a/clang/test/Headers/ms-arm64-intrin.cpp b/clang/test/Headers/ms-arm64-intrin.cpp
index 76a424e0ce4cd..3c37b8ad2f4f9 100644
--- a/clang/test/Headers/ms-arm64-intrin.cpp
+++ b/clang/test/Headers/ms-arm64-intrin.cpp
@@ -2,7 +2,7 @@
// RUN: %clang_cc1 -triple arm64-windows -O1 \
// RUN: -fms-compatibility -fms-compatibility-version=17.00 \
-// RUN: -ffreestanding -fsyntax-only -Werror \
+// RUN: -fsyntax-only -Werror \
// RUN: -isystem %S/Inputs/include %s -S -o - -emit-llvm 2>&1 \
// RUN: | FileCheck %s
@@ -14,16 +14,16 @@ void check_nop() {
}
unsigned short check_byteswap_ushort(unsigned short val) {
-// CHECK: call i16 @_byteswap_ushort(i16 noundef %val)
+// CHECK: call i16 @llvm.bswap.i16(i16 %val)
return _byteswap_ushort(val);
}
unsigned long check_byteswap_ulong(unsigned long val) {
-// CHECK: call i32 @_byteswap_ulong(i32 noundef %val)
+// CHECK: call i32 @llvm.bswap.i32(i32 %val)
return _byteswap_ulong(val);
}
unsigned __int64 check_byteswap_uint64(unsigned __int64 val) {
-// CHECK: call i64 @_byteswap_uint64(i64 noundef %val)
+// CHECK: call i64 @llvm.bswap.i64(i64 %val)
return _byteswap_uint64(val);
}
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