diff options
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/branch-relaxation.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/branch-relaxation.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/branch-relaxation.ll b/llvm/test/CodeGen/AMDGPU/branch-relaxation.ll index 39505404a86..3fd40521801 100644 --- a/llvm/test/CodeGen/AMDGPU/branch-relaxation.ll +++ b/llvm/test/CodeGen/AMDGPU/branch-relaxation.ll @@ -335,6 +335,12 @@ loop: ; GCN-NEXT: ;;#ASMEND ; GCN-NEXT: [[BB3]]: ; %bb3 +; GCN-NEXT: ;;#ASMSTART +; GCN-NEXT: v_nop_e64 +; GCN-NEXT: ;;#ASMEND +; GCN-NEXT: ;;#ASMSTART +; GCN-NEXT: v_nop_e64 +; GCN-NEXT: ;;#ASMEND ; GCN-NEXT: s_endpgm define void @expand_requires_expand(i32 %cond0) #0 { bb0: @@ -356,6 +362,12 @@ bb2: br label %bb3 bb3: +; These NOPs prevent tail-duplication-based outlining +; from firing, which defeats the need to expand the branches and this test. + call void asm sideeffect + "v_nop_e64", ""() #0 + call void asm sideeffect + "v_nop_e64", ""() #0 ret void } @@ -385,6 +397,7 @@ bb3: ; GCN-NEXT: [[ENDIF]]: ; %endif ; GCN-NEXT: s_or_b64 exec, exec, [[MASK]] +; GCN-NEXT: s_sleep 5 ; GCN-NEXT: s_endpgm define void @uniform_inside_divergent(i32 addrspace(1)* %out, i32 %cond) #0 { entry: @@ -402,6 +415,9 @@ if_uniform: br label %endif endif: + ; layout can remove the split branch if it can copy the return block. + ; This call makes the return block long enough that it doesn't get copied. + call void @llvm.amdgcn.s.sleep(i32 5); ret void } |
