[bpf] add support for bswap instructions

[oota-llvm.git] / test / CodeGen / BPF / intrinsics.ll

diff --git a/test/CodeGen/BPF/intrinsics.ll b/test/CodeGen/BPF/intrinsics.ll
index 01ba4c770daf0bb8b7161c8025a584b6ec325ca0..98b57deb7c8ddab944b5f862dcf4273c30bfeedc 100644 (file)
--- a/test/CodeGen/BPF/intrinsics.ll
+++ b/test/CodeGen/BPF/intrinsics.ll
@@ -61,3 +61,28 @@ entry:
 declare void @bar(i64, i32) #1
 
 declare i64 @llvm.bpf.pseudo(i64, i64) #2
+
+define i32 @bswap(i64 %a, i64 %b, i64 %c) #0 {
+entry:
+  %0 = tail call i64 @llvm.bswap.i64(i64 %a)
+  %conv = trunc i64 %b to i32
+  %1 = tail call i32 @llvm.bswap.i32(i32 %conv)
+  %conv1 = zext i32 %1 to i64
+  %add = add i64 %conv1, %0
+  %conv2 = trunc i64 %c to i16
+  %2 = tail call i16 @llvm.bswap.i16(i16 %conv2)
+  %conv3 = zext i16 %2 to i64
+  %add4 = add i64 %add, %conv3
+  %conv5 = trunc i64 %add4 to i32
+  ret i32 %conv5
+; CHECK-LABEL: bswap:
+; CHECK: bswap64 r1     # encoding: [0xdc,0x01,0x00,0x00,0x40,0x00,0x00,0x00]
+; CHECK: bswap32 r2     # encoding: [0xdc,0x02,0x00,0x00,0x20,0x00,0x00,0x00]
+; CHECK: add     r2, r1 # encoding: [0x0f,0x12,0x00,0x00,0x00,0x00,0x00,0x00]
+; CHECK: bswap16 r3     # encoding: [0xdc,0x03,0x00,0x00,0x10,0x00,0x00,0x00]
+; CHECK: add     r2, r3 # encoding: [0x0f,0x32,0x00,0x00,0x00,0x00,0x00,0x00]
+}
+
+declare i64 @llvm.bswap.i64(i64) #1
+declare i32 @llvm.bswap.i32(i32) #1
+declare i16 @llvm.bswap.i16(i16) #1