[Hexagon] Generate bitsplit instruction

llvm-svn: 297239

1 files changed, 35 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Hexagon/bit-bitsplit-src.ll b/llvm/test/CodeGen/Hexagon/bit-bitsplit-src.ll
new file mode 100644
index 00000000000..2d1c71c709f
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/bit-bitsplit-src.ll
@@ -0,0 +1,35 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+; REQUIRES: asserts
+
+; This used to crash. Check for some sane output.
+; CHECK: call printf
+
+target triple = "hexagon"
+
+@g0 = external local_unnamed_addr global [4 x i64], align 8
+@g1 = external hidden unnamed_addr constant [29 x i8], align 1
+@g2 = external hidden unnamed_addr constant [29 x i8], align 1
+
+define void @fred() local_unnamed_addr #0 {
+b0:
+  %v1 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @g0, i32 0, i32 0), align 8
+  %v2 = trunc i64 %v1 to i32
+  %v3 = lshr i64 %v1, 16
+  %v4 = trunc i64 %v3 to i32
+  %v5 = and i32 %v4, 255
+  %v6 = add nuw nsw i32 0, %v5
+  %v7 = add nuw nsw i32 %v6, 0
+  %v8 = zext i32 %v7 to i64
+  %v9 = and i32 %v2, 65535
+  %v10 = and i32 %v4, 65535
+  %v11 = add nuw nsw i32 %v10, %v9
+  %v12 = zext i32 %v11 to i64
+  tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @g1, i32 0, i32 0), i64 %v8) #0
+  tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @g2, i32 0, i32 0), i64 %v12) #0
+  ret void
+}
+
+; Function Attrs: nounwind
+declare void @printf(i8* nocapture readonly, ...) local_unnamed_addr #0
+
+attributes #0 = { nounwind "target-cpu"="hexagonv60" "target-features"="-hvx,-hvx-double,-long-calls" }