1; RUN: llc -march=x86-64 < %s | FileCheck %s
2; PR3701
3
4define i64 @t(i64* %arg) nounwind {
5        br i1 true, label %1, label %5
6
7; <label>:1             ; preds = %0
8        %2 = icmp eq i64* null, %arg            ; <i1> [#uses=1]
9        %3 = tail call i64* asm sideeffect "movl %fs:0,$0", "=r,~{dirflag},~{fpsr},~{flags}"() nounwind         ; <%struct.thread*> [#uses=0]
10; CHECK: test
11; CHECK-NEXT: j
12        br i1 %2, label %4, label %5
13
14; <label>:4             ; preds = %1
15        ret i64 1
16
17; <label>:5             ; preds = %1
18        ret i64 0
19}
20
21; Make sure that we translate this to the bswap intrinsic which lowers down without the
22; inline assembly.
23; CHECK-NOT: #APP
24define i32 @s(i32 %argc, i8** nocapture %argv) unnamed_addr nounwind {
25entry:
26  %0 = trunc i32 %argc to i16
27  %asmtmp = tail call i16 asm "rorw $$8, ${0:w}", "=r,0,~{fpsr},~{flags},~{cc}"(i16 %0) nounwind, !srcloc !0
28  %1 = zext i16 %asmtmp to i32
29  ret i32 %1
30}
31
32!0 = metadata !{i64 935930}
33