From dee3dd9129e1bb5283a7e7f79c3c20b8b81cf13d Mon Sep 17 00:00:00 2001
From: Richard Osborne <richard@xmos.com>
Date: Tue, 19 Jul 2011 12:50:25 +0000
Subject: [PATCH] Add intrinsics for the peek and endin instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135474 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/IntrinsicsXCore.td    |  4 ++++
 lib/Target/XCore/XCoreInstrInfo.td |  9 ++++++++-
 test/CodeGen/XCore/resources.ll    | 16 ++++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/include/llvm/IntrinsicsXCore.td b/include/llvm/IntrinsicsXCore.td
index a062fc4fc7e..5ea4acece90 100644
--- a/include/llvm/IntrinsicsXCore.td
+++ b/include/llvm/IntrinsicsXCore.td
@@ -65,6 +65,10 @@ let TargetPrefix = "xcore" in {  // All intrinsics start with "llvm.xcore.".
                                    [NoCapture<0>, NoCapture<1>]>;
   def int_xcore_setpsc : Intrinsic<[],[llvm_anyptr_ty, llvm_i32_ty],
                                    [NoCapture<0>]>;
+  def int_xcore_peek : Intrinsic<[llvm_i32_ty],[llvm_anyptr_ty],
+                                 [NoCapture<0>]>;
+  def int_xcore_endin : Intrinsic<[llvm_i32_ty],[llvm_anyptr_ty],
+                                 [NoCapture<0>]>;
 
   // Intrinsics for events.
   def int_xcore_waitevent : Intrinsic<[llvm_ptr_ty],[], [IntrReadMem]>;
diff --git a/lib/Target/XCore/XCoreInstrInfo.td b/lib/Target/XCore/XCoreInstrInfo.td
index 55c7527f4e8..c615d9f287a 100644
--- a/lib/Target/XCore/XCoreInstrInfo.td
+++ b/lib/Target/XCore/XCoreInstrInfo.td
@@ -871,7 +871,6 @@ def INITDP_2r : _F2R<(outs), (ins GRRegs:$t, GRRegs:$src),
                      [(int_xcore_initdp GRRegs:$t, GRRegs:$src)]>;
 
 // Two operand long
-// TODO endin, peek,
 // getd, testlcl
 def BITREV_l2r : _FL2R<(outs GRRegs:$dst), (ins GRRegs:$src),
                  "bitrev $dst, $src",
@@ -917,6 +916,14 @@ def SETPSC_l2r : _FL2R<(outs), (ins GRRegs:$src1, GRRegs:$src2),
                        "setpsc res[$src1], $src2",
                        [(int_xcore_setpsc GRRegs:$src1, GRRegs:$src2)]>;
 
+def PEEK_l2r : _FL2R<(outs GRRegs:$dst), (ins GRRegs:$src),
+                      "peek $dst, res[$src]",
+                      [(set GRRegs:$dst, (int_xcore_peek GRRegs:$src))]>;
+
+def ENDIN_l2r : _FL2R<(outs GRRegs:$dst), (ins GRRegs:$src),
+                       "endin $dst, res[$src]",
+                       [(set GRRegs:$dst, (int_xcore_endin GRRegs:$src))]>;
+
 // One operand short
 // TODO edu, eeu, waitet, waitef, tstart, clrtp
 // setdp, setcp, setev, kcall
diff --git a/test/CodeGen/XCore/resources.ll b/test/CodeGen/XCore/resources.ll
index bd0492c88ee..9e5f9cc4bfb 100644
--- a/test/CodeGen/XCore/resources.ll
+++ b/test/CodeGen/XCore/resources.ll
@@ -22,6 +22,8 @@ declare void @llvm.xcore.eeu.p1i8(i8 addrspace(1)* %r)
 declare void @llvm.xcore.setclk.p1i8.p1i8(i8 addrspace(1)* %a, i8 addrspace(1)* %b)
 declare void @llvm.xcore.setrdy.p1i8.p1i8(i8 addrspace(1)* %a, i8 addrspace(1)* %b)
 declare void @llvm.xcore.setpsc.p1i8(i8 addrspace(1)* %r, i32 %value)
+declare i32 @llvm.xcore.peek.p1i8(i8 addrspace(1)* %r)
+declare i32 @llvm.xcore.endin.p1i8(i8 addrspace(1)* %r)
 
 define i8 addrspace(1)* @getr() {
 ; CHECK: getr:
@@ -198,3 +200,17 @@ define void @setpsc(i8 addrspace(1)* %r, i32 %value) {
 	call void @llvm.xcore.setpsc.p1i8(i8 addrspace(1)* %r, i32 %value)
 	ret void
 }
+
+define i32 @peek(i8 addrspace(1)* %r) {
+; CHECK: peek:
+; CHECK: peek r0, res[r0]
+	%result = call i32 @llvm.xcore.peek.p1i8(i8 addrspace(1)* %r)
+	ret i32 %result
+}
+
+define i32 @endin(i8 addrspace(1)* %r) {
+; CHECK: endin:
+; CHECK: endin r0, res[r0]
+	%result = call i32 @llvm.xcore.endin.p1i8(i8 addrspace(1)* %r)
+	ret i32 %result
+}