diff options
Diffstat (limited to 'test/CodeGen/AArch64/lower-range-metadata-func-call.ll')
-rw-r--r-- | test/CodeGen/AArch64/lower-range-metadata-func-call.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/lower-range-metadata-func-call.ll b/test/CodeGen/AArch64/lower-range-metadata-func-call.ll new file mode 100644 index 0000000000000..fd4b2f5ba3054 --- /dev/null +++ b/test/CodeGen/AArch64/lower-range-metadata-func-call.ll @@ -0,0 +1,44 @@ +; RUN: llc -march=aarch64 -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s + +; and can be eliminated +; CHECK-LABEL: {{^}}test_call_known_max_range: +; CHECK: bl foo +; CHECK-NOT: and +; CHECK: ret +define i32 @test_call_known_max_range() #0 { +entry: + %id = tail call i32 @foo(), !range !0 + %and = and i32 %id, 1023 + ret i32 %and +} + +; CHECK-LABEL: {{^}}test_call_known_trunc_1_bit_range: +; CHECK: bl foo +; CHECK: and w{{[0-9]+}}, w0, #0x1ff +; CHECK: ret +define i32 @test_call_known_trunc_1_bit_range() #0 { +entry: + %id = tail call i32 @foo(), !range !0 + %and = and i32 %id, 511 + ret i32 %and +} + +; CHECK-LABEL: {{^}}test_call_known_max_range_m1: +; CHECK: bl foo +; CHECK: and w{{[0-9]+}}, w0, #0xff +; CHECK: ret +define i32 @test_call_known_max_range_m1() #0 { +entry: + %id = tail call i32 @foo(), !range !1 + %and = and i32 %id, 255 + ret i32 %and +} + + +declare i32 @foo() + +attributes #0 = { norecurse nounwind } +attributes #1 = { nounwind readnone } + +!0 = !{i32 0, i32 1024} +!1 = !{i32 0, i32 1023} |