aboutsummaryrefslogtreecommitdiff
path: root/test/CodeGen/AMDGPU/sgpr-control-flow.ll
diff options
context:
space:
mode:
Diffstat (limited to 'test/CodeGen/AMDGPU/sgpr-control-flow.ll')
-rw-r--r--test/CodeGen/AMDGPU/sgpr-control-flow.ll146
1 files changed, 0 insertions, 146 deletions
diff --git a/test/CodeGen/AMDGPU/sgpr-control-flow.ll b/test/CodeGen/AMDGPU/sgpr-control-flow.ll
deleted file mode 100644
index 8e18ab5554e4..000000000000
--- a/test/CodeGen/AMDGPU/sgpr-control-flow.ll
+++ /dev/null
@@ -1,146 +0,0 @@
-; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
-;
-;
-; Most SALU instructions ignore control flow, so we need to make sure
-; they don't overwrite values from other blocks.
-
-; If the branch decision is made based on a value in an SGPR then all
-; threads will execute the same code paths, so we don't need to worry
-; about instructions in different blocks overwriting each other.
-; SI-LABEL: {{^}}sgpr_if_else_salu_br:
-; SI: s_add
-; SI: s_branch
-
-; SI: s_sub
-
-define amdgpu_kernel void @sgpr_if_else_salu_br(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) {
-entry:
- %0 = icmp eq i32 %a, 0
- br i1 %0, label %if, label %else
-
-if:
- %1 = sub i32 %b, %c
- br label %endif
-
-else:
- %2 = add i32 %d, %e
- br label %endif
-
-endif:
- %3 = phi i32 [%1, %if], [%2, %else]
- %4 = add i32 %3, %a
- store i32 %4, i32 addrspace(1)* %out
- ret void
-}
-
-; SI-LABEL: {{^}}sgpr_if_else_salu_br_opt:
-; SI: s_cmp_lg_u32
-; SI: s_cbranch_scc0 [[IF:BB[0-9]+_[0-9]+]]
-
-; SI: ; BB#1: ; %else
-; SI: s_load_dword [[LOAD0:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xe
-; SI: s_load_dword [[LOAD1:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xf
-; SI-NOT: add
-; SI: s_branch [[ENDIF:BB[0-9]+_[0-9]+]]
-
-; SI: [[IF]]: ; %if
-; SI: s_load_dword [[LOAD0]], s{{\[[0-9]+:[0-9]+\]}}, 0xc
-; SI: s_load_dword [[LOAD1]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
-; SI-NOT: add
-
-; SI: [[ENDIF]]: ; %endif
-; SI: s_add_i32 s{{[0-9]+}}, [[LOAD0]], [[LOAD1]]
-; SI: buffer_store_dword
-; SI-NEXT: s_endpgm
-define amdgpu_kernel void @sgpr_if_else_salu_br_opt(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) {
-entry:
- %0 = icmp eq i32 %a, 0
- br i1 %0, label %if, label %else
-
-if:
- %1 = add i32 %b, %c
- br label %endif
-
-else:
- %2 = add i32 %d, %e
- br label %endif
-
-endif:
- %3 = phi i32 [%1, %if], [%2, %else]
- %4 = add i32 %3, %a
- store i32 %4, i32 addrspace(1)* %out
- ret void
-}
-
-; The two S_ADD instructions should write to different registers, since
-; different threads will take different control flow paths.
-
-; SI-LABEL: {{^}}sgpr_if_else_valu_br:
-; SI: s_add_i32 [[SGPR:s[0-9]+]]
-; SI-NOT: s_add_i32 [[SGPR]]
-
-define amdgpu_kernel void @sgpr_if_else_valu_br(i32 addrspace(1)* %out, float %a, i32 %b, i32 %c, i32 %d, i32 %e) {
-entry:
- %tid = call i32 @llvm.amdgcn.workitem.id.x() #0
- %tid_f = uitofp i32 %tid to float
- %tmp1 = fcmp ueq float %tid_f, 0.0
- br i1 %tmp1, label %if, label %else
-
-if:
- %tmp2 = add i32 %b, %c
- br label %endif
-
-else:
- %tmp3 = add i32 %d, %e
- br label %endif
-
-endif:
- %tmp4 = phi i32 [%tmp2, %if], [%tmp3, %else]
- store i32 %tmp4, i32 addrspace(1)* %out
- ret void
-}
-
-; FIXME: Should write to different SGPR pairs instead of copying to
-; VALU for i1 phi.
-
-; SI-LABEL: {{^}}sgpr_if_else_valu_cmp_phi_br:
-; SI: buffer_load_dword [[AVAL:v[0-9]+]]
-; SI: v_cmp_gt_i32_e32 [[CMP_IF:vcc]], 0, [[AVAL]]
-; SI: v_cndmask_b32_e64 [[V_CMP:v[0-9]+]], 0, -1, [[CMP_IF]]
-
-; SI: BB{{[0-9]+}}_2:
-; SI: buffer_load_dword [[AVAL:v[0-9]+]]
-; SI: v_cmp_eq_u32_e32 [[CMP_ELSE:vcc]], 0, [[AVAL]]
-; SI: v_cndmask_b32_e64 [[V_CMP]], 0, -1, [[CMP_ELSE]]
-
-; SI: v_cmp_ne_u32_e32 [[CMP_CMP:vcc]], 0, [[V_CMP]]
-; SI: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP_CMP]]
-; SI: buffer_store_dword [[RESULT]]
-define amdgpu_kernel void @sgpr_if_else_valu_cmp_phi_br(i32 addrspace(1)* %out, i32 addrspace(1)* %a, i32 addrspace(1)* %b) {
-entry:
- %tid = call i32 @llvm.amdgcn.workitem.id.x() #0
- %tmp1 = icmp eq i32 %tid, 0
- br i1 %tmp1, label %if, label %else
-
-if:
- %gep.if = getelementptr i32, i32 addrspace(1)* %a, i32 %tid
- %a.val = load i32, i32 addrspace(1)* %gep.if
- %cmp.if = icmp eq i32 %a.val, 0
- br label %endif
-
-else:
- %gep.else = getelementptr i32, i32 addrspace(1)* %b, i32 %tid
- %b.val = load i32, i32 addrspace(1)* %gep.else
- %cmp.else = icmp slt i32 %b.val, 0
- br label %endif
-
-endif:
- %tmp4 = phi i1 [%cmp.if, %if], [%cmp.else, %else]
- %ext = sext i1 %tmp4 to i32
- store i32 %ext, i32 addrspace(1)* %out
- ret void
-}
-
-declare i32 @llvm.amdgcn.workitem.id.x() #0
-
-attributes #0 = { readnone }