BPF backend

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

diff --git a/test/CodeGen/BPF/intrinsics.ll b/test/CodeGen/BPF/intrinsics.ll
new file mode 100644 (file)
index 0000000..9a078fb
--- /dev/null
+++ b/test/CodeGen/BPF/intrinsics.ll
@@ -0,0 +1,50 @@
+; RUN: llc < %s -march=bpf | FileCheck %s
+
+; Function Attrs: nounwind uwtable
+define i32 @ld_b(i64 %foo, i64* nocapture %bar, i8* %ctx, i8* %ctx2) #0 {
+  %1 = tail call i64 @llvm.bpf.load.byte(i8* %ctx, i64 123) #2
+  %2 = add i64 %1, %foo
+  %3 = load volatile i64* %bar, align 8
+  %4 = add i64 %2, %3
+  %5 = tail call i64 @llvm.bpf.load.byte(i8* %ctx2, i64 %foo) #2
+  %6 = add i64 %4, %5
+  %7 = load volatile i64* %bar, align 8
+  %8 = add i64 %6, %7
+  %9 = trunc i64 %8 to i32
+  ret i32 %9
+; CHECK-LABEL: ld_b:
+; CHECK: ldabs_b r0, r6.data + 123
+; CHECK: ldind_b r0, r6.data
+}
+
+declare i64 @llvm.bpf.load.byte(i8*, i64) #1
+
+; Function Attrs: nounwind uwtable
+define i32 @ld_h(i8* %ctx, i8* %ctx2, i32 %foo) #0 {
+  %1 = tail call i64 @llvm.bpf.load.half(i8* %ctx, i64 123) #2
+  %2 = sext i32 %foo to i64
+  %3 = tail call i64 @llvm.bpf.load.half(i8* %ctx2, i64 %2) #2
+  %4 = add i64 %3, %1
+  %5 = trunc i64 %4 to i32
+  ret i32 %5
+; CHECK-LABEL: ld_h:
+; CHECK: ldind_h r0, r6.data
+; CHECK: ldabs_h r0, r6.data + 123
+}
+
+declare i64 @llvm.bpf.load.half(i8*, i64) #1
+
+; Function Attrs: nounwind uwtable
+define i32 @ld_w(i8* %ctx, i8* %ctx2, i32 %foo) #0 {
+  %1 = tail call i64 @llvm.bpf.load.word(i8* %ctx, i64 123) #2
+  %2 = sext i32 %foo to i64
+  %3 = tail call i64 @llvm.bpf.load.word(i8* %ctx2, i64 %2) #2
+  %4 = add i64 %3, %1
+  %5 = trunc i64 %4 to i32
+  ret i32 %5
+; CHECK-LABEL: ld_w:
+; CHECK: ldind_w r0, r6.data
+; CHECK: ldabs_w r0, r6.data + 123
+}
+
+declare i64 @llvm.bpf.load.word(i8*, i64) #1