1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
; This tests that the llvm.SI.end.cf intrinsic is not inserted into the
; loop block. This intrinsic will be lowered to s_or_b64 by the code
; generator.
; CHECK-LABEL: {{^}}test:
; This is was lowered from the llvm.SI.end.cf intrinsic:
; CHECK: s_or_b64 exec, exec
; CHECK: [[LOOP_LABEL:[0-9A-Za-z_]+]]: ; %loop{{$}}
; CHECK-NOT: s_or_b64 exec, exec
; CHECK: s_cbranch_execnz [[LOOP_LABEL]]
define void @test(i32 addrspace(1)* %out) {
entry:
%cond = call i32 @llvm.r600.read.tidig.x() #0
%tmp0 = icmp eq i32 %cond, 0
br i1 %tmp0, label %if, label %loop
if:
store i32 0, i32 addrspace(1)* %out
br label %loop
loop:
%tmp1 = phi i32 [0, %entry], [0, %if], [%inc, %loop]
%inc = add i32 %tmp1, %cond
%tmp2 = icmp ugt i32 %inc, 10
br i1 %tmp2, label %done, label %loop
done:
%tmp3 = getelementptr i32, i32 addrspace(1)* %out, i64 1
store i32 %inc, i32 addrspace(1)* %tmp3
ret void
}
declare i32 @llvm.r600.read.tidig.x() #0
attributes #0 = { readnone }
|
