1 files changed, 96 insertions, 0 deletions
diff --git a/test/CodeGen/BPF/cc_args.ll b/test/CodeGen/BPF/cc_args.ll
new file mode 100644
index 0000000..5085fe5
--- /dev/null
+++ b/test/CodeGen/BPF/cc_args.ll
@@ -0,0 +1,96 @@
+; RUN: llc < %s -march=bpf -show-mc-encoding | FileCheck %s
+; test little endian only for now
+
+define void @test() #0 {
+entry:
+; CHECK: test:
+
+; CHECK: mov  r1, 123 # encoding: [0xb7,0x01,0x00,0x00,0x7b,0x00,0x00,0x00]
+; CHECK: call f_i16
+  call void @f_i16(i16 123)
+
+; CHECK: mov  r1, 12345678 # encoding: [0xb7,0x01,0x00,0x00,0x4e,0x61,0xbc,0x00]
+; CHECK: call f_i32
+  call void @f_i32(i32 12345678)
+
+; CHECK: ld_64 r1, 72623859790382856 # encoding: [0x18,0x01,0x00,0x00,0x08,0x07,0x06,0x05,0x00,0x00,0x00,0x00,0x04,0x03,0x02,0x01]
+; CHECK: call f_i64
+  call void @f_i64(i64 72623859790382856)
+
+; CHECK: mov  r1, 1234
+; CHECK: mov  r2, 5678
+; CHECK: call f_i32_i32
+  call void @f_i32_i32(i32 1234, i32 5678)
+
+; CHECK: mov  r1, 2
+; CHECK: mov  r2, 3
+; CHECK: mov  r3, 4
+; CHECK: call f_i16_i32_i16
+  call void @f_i16_i32_i16(i16 2, i32 3, i16 4)
+
+; CHECK: mov  r1, 5
+; CHECK: ld_64 r2, 7262385979038285
+; CHECK: mov  r3, 6
+; CHECK: call f_i16_i64_i16
+  call void @f_i16_i64_i16(i16 5, i64 7262385979038285, i16 6)
+
+  ret void
+}
+
+@g_i16 = common global i16 0, align 2
+@g_i32 = common global i32 0, align 2
+@g_i64 = common global i64 0, align 4
+
+define void @f_i16(i16 %a) #0 {
+; CHECK: f_i16:
+; CHECK: sth 0(r2), r1 # encoding: [0x6b,0x12,0x00,0x00,0x00,0x00,0x00,0x00]
+  store volatile i16 %a, i16* @g_i16, align 2
+  ret void
+}
+
+define void @f_i32(i32 %a) #0 {
+; CHECK: f_i32:
+; CHECK: sth 0(r2), r1 # encoding: [0x6b,0x12,0x00,0x00,0x00,0x00,0x00,0x00]
+; CHECK: sth 2(r2), r1 # encoding: [0x6b,0x12,0x02,0x00,0x00,0x00,0x00,0x00]
+  store volatile i32 %a, i32* @g_i32, align 2
+  ret void
+}
+
+define void @f_i64(i64 %a) #0 {
+; CHECK: f_i64:
+; CHECK: stw 0(r2), r1
+; CHECK: stw 4(r2), r1 # encoding: [0x63,0x12,0x04,0x00,0x00,0x00,0x00,0x00]
+  store volatile i64 %a, i64* @g_i64, align 2
+  ret void
+}
+
+define void @f_i32_i32(i32 %a, i32 %b) #0 {
+; CHECK: f_i32_i32:
+; CHECK: stw 0(r3), r1
+  store volatile i32 %a, i32* @g_i32, align 4
+; CHECK: stw 0(r3), r2
+  store volatile i32 %b, i32* @g_i32, align 4
+  ret void
+}
+
+define void @f_i16_i32_i16(i16 %a, i32 %b, i16 %c) #0 {
+; CHECK: f_i16_i32_i16:
+; CHECK: sth 0(r4), r1
+  store volatile i16 %a, i16* @g_i16, align 2
+; CHECK: stw 0(r1), r2
+  store volatile i32 %b, i32* @g_i32, align 4
+; CHECK: sth 0(r4), r3
+  store volatile i16 %c, i16* @g_i16, align 2
+  ret void
+}
+
+define void @f_i16_i64_i16(i16 %a, i64 %b, i16 %c) #0 {
+; CHECK: f_i16_i64_i16:
+; CHECK: sth 0(r4), r1
+  store volatile i16 %a, i16* @g_i16, align 2
+; CHECK: std 0(r1), r2 # encoding: [0x7b,0x21,0x00,0x00,0x00,0x00,0x00,0x00]
+  store volatile i64 %b, i64* @g_i64, align 8
+; CHECK: sth 0(r4), r3
+  store volatile i16 %c, i16* @g_i16, align 2
+  ret void
+}