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-rw-r--r--llvm/test/CodeGen/Hexagon/tfr-slotindex.ll26
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/tfr-slotindex.ll b/llvm/test/CodeGen/Hexagon/tfr-slotindex.ll
new file mode 100644
index 0000000..cebba94
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/tfr-slotindex.ll
@@ -0,0 +1,26 @@
+; Check that after tfr-cleanup COPY to $r0 is converted to tfrsi instruction
+; The tfrst instruction must use the same slot index as the COPY instruction
+; to avoid breaking live interval information.
+; Check that there is no machine verifier crash
+
+; RUN: llc -stop-after=tfr-cleanup -verify-machineinstrs %s -o - | FileCheck %s
+
+; CHECK: $r0 = A2_tfrsi 34767
+
+target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
+target triple = "hexagon"
+
+; Function Attrs: nounwind optsize
+define dso_local i32 @foo() local_unnamed_addr #0 {
+entry:
+ call void @bar(i32 34767) #1
+ call void @baz(i32 34767) #1
+ ret i32 15
+}
+
+declare void @bar(i32) local_unnamed_addr
+
+declare void @baz(i32) local_unnamed_addr
+
+attributes #0 = { nounwind optsize "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="hexagonv68" "target-features"="+v68,-long-calls" }
+attributes #1 = { noduplicate nomerge nounwind }