[X86] Add FXSR intrinsics

Add intrinsics for the FXSR instructions (FXSAVE/FXSAVE64/FXRSTOR/FXRSTOR64)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241049 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/IR/IntrinsicsX86.td b/include/llvm/IR/IntrinsicsX86.td
index 80446d35a4b2a9625bf8ebf6b70e7d0af91ed647..79e57a6d565a262fd46fda511b863f8dd6c82824 100644 (file)
--- a/include/llvm/IR/IntrinsicsX86.td
+++ b/include/llvm/IR/IntrinsicsX86.td
@@ -3514,6 +3514,19 @@ let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
               Intrinsic<[], [llvm_i64_ty]>;
 }
 
+//===----------------------------------------------------------------------===//
+// FXSR
+let TargetPrefix = "x86" in {  // All intrinsics start with "llvm.x86.".
+  def int_x86_fxrstor : GCCBuiltin<"__builtin_ia32_fxrstor">,
+              Intrinsic<[], [llvm_ptr_ty], []>;
+  def int_x86_fxrstor64 : GCCBuiltin<"__builtin_ia32_fxrstor64">,
+              Intrinsic<[], [llvm_ptr_ty], []>;
+  def int_x86_fxsave : GCCBuiltin<"__builtin_ia32_fxsave">,
+              Intrinsic<[], [llvm_ptr_ty], []>;
+  def int_x86_fxsave64 : GCCBuiltin<"__builtin_ia32_fxsave64">,
+              Intrinsic<[], [llvm_ptr_ty], []>;
+}
+
 //===----------------------------------------------------------------------===//
 // Half float conversion
 

diff --git a/lib/Target/X86/X86InstrFPStack.td b/lib/Target/X86/X86InstrFPStack.td
index 0dd05d8befd624074d659d927d025997519f500a..49068e9c37d3a20dc8a8ca7427ebdffe7756e20b 100644 (file)
--- a/lib/Target/X86/X86InstrFPStack.td
+++ b/lib/Target/X86/X86InstrFPStack.td
@@ -633,16 +633,16 @@ def FRNDINT : I<0xD9, MRM_FC, (outs), (ins), "frndint", [], IIC_FRNDINT>;
 def FSCALE : I<0xD9, MRM_FD, (outs), (ins), "fscale", [], IIC_FSCALE>;
 def FCOMPP : I<0xDE, MRM_D9, (outs), (ins), "fcompp", [], IIC_FCOMPP>;
 
-def FXSAVE : I<0xAE, MRM0m, (outs opaque512mem:$dst), (ins),
-               "fxsave\t$dst", [], IIC_FXSAVE>, TB;
-def FXSAVE64 : RI<0xAE, MRM0m, (outs opaque512mem:$dst), (ins),
-                  "fxsave64\t$dst", [], IIC_FXSAVE>, TB,
-                  Requires<[In64BitMode]>;
+def FXSAVE : I<0xAE, MRM0m, (outs), (ins opaque512mem:$dst),
+               "fxsave\t$dst", [(int_x86_fxsave addr:$dst)], IIC_FXSAVE>, TB;
+def FXSAVE64 : RI<0xAE, MRM0m, (outs), (ins opaque512mem:$dst),
+                  "fxsave64\t$dst", [(int_x86_fxsave64 addr:$dst)], 
+                  IIC_FXSAVE>, TB, Requires<[In64BitMode]>;
 def FXRSTOR : I<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
-                "fxrstor\t$src", [], IIC_FXRSTOR>, TB;
+              "fxrstor\t$src", [(int_x86_fxrstor addr:$src)], IIC_FXRSTOR>, TB;
 def FXRSTOR64 : RI<0xAE, MRM1m, (outs), (ins opaque512mem:$src),
-                  "fxrstor64\t$src", [], IIC_FXRSTOR>, TB,
-                  Requires<[In64BitMode]>;
+                   "fxrstor64\t$src", [(int_x86_fxrstor64 addr:$src)],
+                   IIC_FXRSTOR>, TB, Requires<[In64BitMode]>;
 } // SchedRW
 
 //===----------------------------------------------------------------------===//

diff --git a/test/CodeGen/X86/system-intrinsics-64.ll b/test/CodeGen/X86/system-intrinsics-64.ll
new file mode 100644 (file)
index 0000000..96c4417
--- /dev/null
+++ b/test/CodeGen/X86/system-intrinsics-64.ll
@@ -0,0 +1,33 @@
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
+
+define void @test_fxsave(i8* %ptr) {
+; CHECK-LABEL: test_fxsave
+; CHECK: fxsave
+  call void @llvm.x86.fxsave(i8* %ptr)
+  ret void;
+}
+declare void @llvm.x86.fxsave(i8*)
+
+define void @test_fxsave64(i8* %ptr) {
+; CHECK-LABEL: test_fxsave64
+; CHECK: fxsave64
+  call void @llvm.x86.fxsave64(i8* %ptr)
+  ret void;
+}
+declare void @llvm.x86.fxsave64(i8*)
+
+define void @test_fxrstor(i8* %ptr) {
+; CHECK-LABEL: test_fxrstor
+; CHECK: fxrstor
+  call void @llvm.x86.fxrstor(i8* %ptr)
+  ret void;
+}
+declare void @llvm.x86.fxrstor(i8*)
+
+define void @test_fxrstor64(i8* %ptr) {
+; CHECK-LABEL: test_fxrstor64
+; CHECK: fxrstor64
+  call void @llvm.x86.fxrstor64(i8* %ptr)
+  ret void;
+}
+declare void @llvm.x86.fxrstor64(i8*)

diff --git a/test/CodeGen/X86/system-intrinsics.ll b/test/CodeGen/X86/system-intrinsics.ll
new file mode 100644 (file)
index 0000000..84fcd05
--- /dev/null
+++ b/test/CodeGen/X86/system-intrinsics.ll
@@ -0,0 +1,17 @@
+; RUN: llc < %s -mtriple=i686-unknown-unknown   | FileCheck %s
+
+define void @test_fxsave(i8* %ptr) {
+; CHECK-LABEL: test_fxsave
+; CHECK: fxsave
+  call void @llvm.x86.fxsave(i8* %ptr)
+  ret void;
+}
+declare void @llvm.x86.fxsave(i8*)
+
+define void @test_fxrstor(i8* %ptr) {
+; CHECK-LABEL: test_fxrstor
+; CHECK: fxrstor
+  call void @llvm.x86.fxrstor(i8* %ptr)
+  ret void;
+}
+declare void @llvm.x86.fxrstor(i8*)