AMDGPU: Switch simplifydemandedbits-recursion.ll to generated checks (#131317)

This just checked the s_endpgm. Generate full checks, and remove undefs.

Author: arsenm

llvm/test/CodeGen/AMDGPU/simplifydemandedbits-recursion.ll

@@ -1,3 +1,4 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
 ; RUN: llc -mtriple=amdgcn < %s | FileCheck %s
 
 ; Check we can compile this bugpoint-reduced test without an
@@ -9,17 +10,79 @@
 
 @0 = external unnamed_addr addrspace(3) global [462 x float], align 4
 
-; Function Attrs: nounwind readnone speculatable
 declare i32 @llvm.amdgcn.workitem.id.y() #0
-
-; Function Attrs: nounwind readnone speculatable
 declare i32 @llvm.amdgcn.workitem.id.x() #0
-
-; Function Attrs: nounwind readnone speculatable
 declare float @llvm.fmuladd.f32(float, float, float) #0
 
-; CHECK: s_endpgm
 define amdgpu_kernel void @foo(ptr addrspace(1) noalias nocapture readonly %arg, ptr addrspace(1) noalias nocapture readonly %arg1, ptr addrspace(1) noalias nocapture %arg2, float %arg3, i1 %c0, i1 %c1, i1 %c2, i1 %c3, i1 %c4, i1 %c5) local_unnamed_addr !reqd_work_group_size !0 {
+; CHECK-LABEL: foo:
+; CHECK:       ; %bb.0: ; %bb
+; CHECK-NEXT:    s_load_dword s6, s[4:5], 0x10
+; CHECK-NEXT:    s_load_dwordx2 s[2:3], s[4:5], 0x10
+; CHECK-NEXT:    s_load_dword s10, s[4:5], 0x11
+; CHECK-NEXT:    v_lshlrev_b32_e32 v2, 2, v0
+; CHECK-NEXT:    s_movk_i32 s0, 0x54
+; CHECK-NEXT:    v_mov_b32_e32 v0, 0
+; CHECK-NEXT:    v_mad_u32_u24 v1, v1, s0, v2
+; CHECK-NEXT:    s_waitcnt lgkmcnt(0)
+; CHECK-NEXT:    s_bitcmp1_b32 s6, 8
+; CHECK-NEXT:    s_cselect_b64 s[0:1], -1, 0
+; CHECK-NEXT:    s_bitcmp1_b32 s6, 16
+; CHECK-NEXT:    v_cndmask_b32_e64 v2, 0, 1, s[0:1]
+; CHECK-NEXT:    s_cselect_b64 s[4:5], -1, 0
+; CHECK-NEXT:    v_cmp_ne_u32_e64 s[0:1], 1, v2
+; CHECK-NEXT:    s_xor_b64 s[4:5], s[4:5], -1
+; CHECK-NEXT:    s_bitcmp1_b32 s2, 24
+; CHECK-NEXT:    s_cselect_b64 s[6:7], -1, 0
+; CHECK-NEXT:    s_xor_b64 s[6:7], s[6:7], -1
+; CHECK-NEXT:    s_bitcmp1_b32 s3, 0
+; CHECK-NEXT:    s_cselect_b64 s[8:9], -1, 0
+; CHECK-NEXT:    s_bitcmp1_b32 s10, 8
+; CHECK-NEXT:    s_cselect_b64 s[10:11], -1, 0
+; CHECK-NEXT:    s_and_b64 s[2:3], exec, s[6:7]
+; CHECK-NEXT:    s_and_b64 s[4:5], exec, s[4:5]
+; CHECK-NEXT:    s_and_b64 s[6:7], exec, s[10:11]
+; CHECK-NEXT:    s_and_b64 s[8:9], exec, s[8:9]
+; CHECK-NEXT:    s_mov_b32 m0, -1
+; CHECK-NEXT:  .LBB0_1: ; %.loopexit145
+; CHECK-NEXT:    ; =>This Loop Header: Depth=1
+; CHECK-NEXT:    ; Child Loop BB0_3 Depth 2
+; CHECK-NEXT:    ; Child Loop BB0_4 Depth 3
+; CHECK-NEXT:    ; Child Loop BB0_5 Depth 2
+; CHECK-NEXT:    v_mov_b32_e32 v2, v1
+; CHECK-NEXT:    s_branch .LBB0_3
+; CHECK-NEXT:  .LBB0_2: ; %.loopexit
+; CHECK-NEXT:    ; in Loop: Header=BB0_3 Depth=2
+; CHECK-NEXT:    v_add_i32_e32 v2, vcc, 0x540, v2
+; CHECK-NEXT:    s_mov_b64 vcc, s[4:5]
+; CHECK-NEXT:    s_cbranch_vccnz .LBB0_5
+; CHECK-NEXT:  .LBB0_3: ; %bb13
+; CHECK-NEXT:    ; Parent Loop BB0_1 Depth=1
+; CHECK-NEXT:    ; => This Loop Header: Depth=2
+; CHECK-NEXT:    ; Child Loop BB0_4 Depth 3
+; CHECK-NEXT:    s_and_b64 vcc, exec, s[0:1]
+; CHECK-NEXT:    v_mov_b32_e32 v3, v2
+; CHECK-NEXT:    s_cbranch_vccnz .LBB0_2
+; CHECK-NEXT:  .LBB0_4: ; %bb21
+; CHECK-NEXT:    ; Parent Loop BB0_1 Depth=1
+; CHECK-NEXT:    ; Parent Loop BB0_3 Depth=2
+; CHECK-NEXT:    ; => This Inner Loop Header: Depth=3
+; CHECK-NEXT:    ds_write_b32 v3, v0
+; CHECK-NEXT:    v_add_i32_e32 v3, vcc, 32, v3
+; CHECK-NEXT:    s_mov_b64 vcc, s[2:3]
+; CHECK-NEXT:    s_cbranch_vccz .LBB0_4
+; CHECK-NEXT:    s_branch .LBB0_2
+; CHECK-NEXT:  .LBB0_5: ; %bb31
+; CHECK-NEXT:    ; Parent Loop BB0_1 Depth=1
+; CHECK-NEXT:    ; => This Inner Loop Header: Depth=2
+; CHECK-NEXT:    s_mov_b64 vcc, s[6:7]
+; CHECK-NEXT:    s_cbranch_vccz .LBB0_5
+; CHECK-NEXT:  ; %bb.6: ; %bb30
+; CHECK-NEXT:    ; in Loop: Header=BB0_1 Depth=1
+; CHECK-NEXT:    s_mov_b64 vcc, s[8:9]
+; CHECK-NEXT:    s_cbranch_vccz .LBB0_1
+; CHECK-NEXT:  ; %bb.7: ; %bb11
+; CHECK-NEXT:    s_endpgm
 bb:
   %tmp = tail call i32 @llvm.amdgcn.workitem.id.y()
   %tmp4 = tail call i32 @llvm.amdgcn.workitem.id.x()
@@ -47,7 +110,7 @@ bb13:                                             ; preds = %.loopexit, %.loopex
 
 bb17:                                             ; preds = %bb13
   %tmp18 = mul i32 %tmp15, 224
-  %tmp19 = add i32 undef, %tmp18
+  %tmp19 = add i32 0, %tmp18
   br label %bb21
 
 .loopexit:                                        ; preds = %bb21, %bb13
@@ -58,7 +121,7 @@ bb21:                                             ; preds = %bb21, %bb17
   %tmp22 = phi i32 [ %tmp4, %bb17 ], [ %tmp25, %bb21 ]
   %tmp23 = add i32 %tmp22, %tmp16
   %tmp24 = getelementptr inbounds float, ptr addrspace(3) @0, i32 %tmp23
-  store float undef, ptr addrspace(3) %tmp24, align 4
+  store float 0.0, ptr addrspace(3) %tmp24, align 4
   %tmp25 = add nuw i32 %tmp22, 8
   br i1 %c3, label %bb21, label %.loopexit