source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/AMDGPU/endcf-loop-header.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 949 bytes
Line 
1; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
2
3; This tests that the llvm.SI.end.cf intrinsic is not inserted into the
4; loop block.  This intrinsic will be lowered to s_or_b64 by the code
5; generator.
6
7; CHECK-LABEL: {{^}}test:
8
9; This is was lowered from the llvm.SI.end.cf intrinsic:
10; CHECK: s_or_b64 exec, exec
11
12; CHECK: [[LOOP_LABEL:[0-9A-Za-z_]+]]: ; %loop{{$}}
13; CHECK-NOT: s_or_b64 exec, exec
14; CHECK: s_cbranch_execnz [[LOOP_LABEL]]
15define void @test(i32 addrspace(1)* %out, i32 %cond) {
16entry:
17  %tmp0 = icmp eq i32 %cond, 0
18  br i1 %tmp0, label %if, label %loop
19
20if:
21  store i32 0, i32 addrspace(1)* %out
22  br label %loop
23
24loop:
25  %tmp1 = phi i32 [0, %entry], [0, %if], [%inc, %loop]
26  %inc = add i32 %tmp1, %cond
27  %tmp2 = icmp ugt i32 %inc, 10
28  br i1 %tmp2, label %done, label %loop
29
30done:
31  %tmp3 = getelementptr i32, i32 addrspace(1)* %out, i64 1
32  store i32 %inc, i32 addrspace(1)* %tmp3
33  ret void
34}
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