Fix pattern for MKMSK instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158409 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/XCore/XCoreInstrInfo.td b/lib/Target/XCore/XCoreInstrInfo.td
index b25a08d25c1a9fd52189c38a9706b097bdd57df6..b2f060377688e8f271b9e888084d52b25dc8214a 100644 (file)
--- a/lib/Target/XCore/XCoreInstrInfo.td
+++ b/lib/Target/XCore/XCoreInstrInfo.td
@@ -796,7 +796,7 @@ def MKMSK_rus : _FRUS<(outs GRRegs:$dst), (ins i32imm:$size),
 
 def MKMSK_2r : _FRUS<(outs GRRegs:$dst), (ins GRRegs:$size),
                  "mkmsk $dst, $size",
-                 [(set GRRegs:$dst, (add (shl 1, GRRegs:$size), 0xffffffff))]>;
+                 [(set GRRegs:$dst, (add (shl 1, GRRegs:$size), -1))]>;
 
 def GETR_rus : _FRUS<(outs GRRegs:$dst), (ins i32imm:$type),
                  "getr $dst, $type",

diff --git a/test/CodeGen/XCore/mkmsk.ll b/test/CodeGen/XCore/mkmsk.ll
new file mode 100644 (file)
index 0000000..377612b
--- /dev/null
+++ b/test/CodeGen/XCore/mkmsk.ll
@@ -0,0 +1,11 @@
+; RUN: llc < %s -march=xcore | FileCheck %s
+
+define i32 @f(i32) nounwind {
+; CHECK: f:
+; CHECK: mkmsk r0, r0
+; CHECK-NEXT: retsp 0
+entry:
+  %1 = shl i32 1, %0
+  %2 = add i32 %1, -1
+  ret i32 %2
+}