xref: /llvm-project/llvm/test/CodeGen/X86/absolute-bt.ll (revision 2f448bf509432c1a19ec46ab8cbc7353c03c6280)
1; RUN: llc < %s | FileCheck %s
2; RUN: llc -relocation-model=pic < %s | FileCheck %s
3
4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5target triple = "x86_64-unknown-linux-gnu"
6
7@bit_mask8 = external hidden global i8, !absolute_symbol !0
8@bit_mask32 = external hidden global i8, !absolute_symbol !1
9@bit_mask64 = external hidden global i8, !absolute_symbol !2
10
11declare void @f()
12
13define void @foo32(ptr %ptr) {
14  %load = load i32, ptr %ptr
15  %and = and i32 %load, 31
16  %shl = shl i32 1, %and
17  %and2 = and i32 %shl, ptrtoint (ptr @bit_mask32 to i32)
18  ; CHECK: movl $bit_mask32, %eax
19  ; CHECK: btl %ecx, %eax
20  %icmp = icmp eq i32 %and2, 0
21  br i1 %icmp, label %t, label %f
22
23t:
24  call void @f()
25  ret void
26
27f:
28  ret void
29}
30
31define void @foo64(ptr %ptr) {
32  %load = load i64, ptr %ptr
33  %and = and i64 %load, 63
34  %shl = shl i64 1, %and
35  %and2 = and i64 %shl, ptrtoint (ptr @bit_mask64 to i64)
36  ; CHECK: movabsq $bit_mask64, %rax
37  ; CHECK: btq %rcx, %rax
38  %icmp = icmp eq i64 %and2, 0
39  br i1 %icmp, label %t, label %f
40
41t:
42  call void @f()
43  ret void
44
45f:
46  ret void
47}
48
49!0 = !{i64 0, i64 256}
50!1 = !{i64 0, i64 4294967296}
51!2 = !{i64 -1, i64 -1}
52