1 files changed, 113 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/DirectX/Metadata/loop-md-errs.ll b/llvm/test/CodeGen/DirectX/Metadata/loop-md-errs.ll
new file mode 100644
index 0000000..fbe4653
--- /dev/null
+++ b/llvm/test/CodeGen/DirectX/Metadata/loop-md-errs.ll
@@ -0,0 +1,113 @@
+; RUN: split-file %s %t
+; RUN: not opt -S --dxil-translate-metadata %t/args.ll 2>&1 | FileCheck %t/args.ll
+; RUN: not opt -S --dxil-translate-metadata %t/bad-count.ll 2>&1 | FileCheck %t/bad-count.ll
+; RUN: not opt -S --dxil-translate-metadata %t/invalid-disable.ll 2>&1 | FileCheck %t/invalid-disable.ll
+; RUN: not opt -S --dxil-translate-metadata %t/invalid-full.ll 2>&1 | FileCheck %t/invalid-full.ll
+
+; Test that loop metadata is validated as with the DXIL validator
+
+;--- args.ll
+
+; CHECK: Invalid "llvm.loop" metadata: Provided conflicting hints
+
+target triple = "dxilv1.0-unknown-shadermodel6.0-library"
+
+define void @example_loop(i32 %n) {
+entry:
+  br label %loop.header
+
+loop.header:
+  %i = phi i32 [ 0, %entry ], [ %i.next, %loop.body ]
+  %cmp = icmp slt i32 %i, %n
+  br i1 %cmp, label %loop.body, label %exit
+
+loop.body:
+  %i.next = add nsw i32 %i, 1
+  br label %loop.header, !llvm.loop !1
+
+exit:
+  ret void
+}
+
+!1 = !{!1, !2, !3} ; conflicting args
+!2 = !{!"llvm.loop.unroll.full"}
+!3 = !{!"llvm.loop.unroll.disable"}
+
+;--- bad-count.ll
+
+; CHECK: "llvm.loop.unroll.count" must have 2 operands and the second must be a constant integer
+
+target triple = "dxilv1.0-unknown-shadermodel6.0-library"
+
+define void @example_loop(i32 %n) {
+entry:
+  br label %loop.header
+
+loop.header:
+  %i = phi i32 [ 0, %entry ], [ %i.next, %loop.body ]
+  %cmp = icmp slt i32 %i, %n
+  br i1 %cmp, label %loop.body, label %exit
+
+loop.body:
+  %i.next = add nsw i32 %i, 1
+  br label %loop.header, !llvm.loop !1
+
+exit:
+  ret void
+}
+
+!1 = !{!1, !2}
+!2 = !{!"llvm.loop.unroll.count", !"not an int"} ; invalid count parameters
+
+;--- invalid-disable.ll
+
+; CHECK: Invalid "llvm.loop" metadata: "llvm.loop.unroll.disable" and "llvm.loop.unroll.full" must be provided as a single operand
+
+target triple = "dxilv1.0-unknown-shadermodel6.0-library"
+
+define void @example_loop(i32 %n) {
+entry:
+  br label %loop.header
+
+loop.header:
+  %i = phi i32 [ 0, %entry ], [ %i.next, %loop.body ]
+  %cmp = icmp slt i32 %i, %n
+  br i1 %cmp, label %loop.body, label %exit
+
+loop.body:
+  %i.next = add nsw i32 %i, 1
+  br label %loop.header, !llvm.loop !1
+
+exit:
+  ret void
+}
+
+!1 = !{!1, !2}
+!2 = !{!"llvm.loop.unroll.disable", i32 0} ; invalid second operand
+
+
+;--- invalid-full.ll
+
+; CHECK: Invalid "llvm.loop" metadata: "llvm.loop.unroll.disable" and "llvm.loop.unroll.full" must be provided as a single operand
+
+target triple = "dxilv1.0-unknown-shadermodel6.0-library"
+
+define void @example_loop(i32 %n) {
+entry:
+  br label %loop.header
+
+loop.header:
+  %i = phi i32 [ 0, %entry ], [ %i.next, %loop.body ]
+  %cmp = icmp slt i32 %i, %n
+  br i1 %cmp, label %loop.body, label %exit
+
+loop.body:
+  %i.next = add nsw i32 %i, 1
+  br label %loop.header, !llvm.loop !1
+
+exit:
+  ret void
+}
+
+!1 = !{!1, !2}
+!2 = !{!"llvm.loop.unroll.full", i32 0} ; invalid second operand