AMDGPU: Fix test failure

Author: arsenm

llvm/test/CodeGen/AMDGPU/exec-mask-opt-cannot-create-empty-or-backward-segment.ll

@@ -31,9 +31,9 @@ define amdgpu_kernel void @cannot_create_empty_or_backwards_segment(i1 %arg, i1
 ; CHECK-NEXT:    v_mov_b32_e32 v1, 0
 ; CHECK-NEXT:    s_branch .LBB0_3
 ; CHECK-NEXT:  .LBB0_1: ; in Loop: Header=BB0_3 Depth=1
-; CHECK-NEXT:    s_mov_b64 s[18:19], -1
-; CHECK-NEXT:    s_mov_b64 s[16:17], 0
+; CHECK-NEXT:    s_mov_b64 s[18:19], 0
 ; CHECK-NEXT:    s_mov_b64 s[20:21], -1
+; CHECK-NEXT:    s_mov_b64 s[16:17], -1
 ; CHECK-NEXT:    s_mov_b64 s[22:23], -1
 ; CHECK-NEXT:  .LBB0_2: ; %Flow7
 ; CHECK-NEXT:    ; in Loop: Header=BB0_3 Depth=1
@@ -49,19 +49,19 @@ define amdgpu_kernel void @cannot_create_empty_or_backwards_segment(i1 %arg, i1
 ; CHECK-NEXT:    s_cbranch_vccz .LBB0_6
 ; CHECK-NEXT:  ; %bb.5: ; %bb9
 ; CHECK-NEXT:    ; in Loop: Header=BB0_3 Depth=1
-; CHECK-NEXT:    s_mov_b64 s[18:19], 0
-; CHECK-NEXT:    s_mov_b64 s[16:17], -1
+; CHECK-NEXT:    s_mov_b64 s[16:17], 0
+; CHECK-NEXT:    s_mov_b64 s[18:19], -1
 ; CHECK-NEXT:    s_mov_b64 s[22:23], s[8:9]
 ; CHECK-NEXT:    s_cbranch_execz .LBB0_7
 ; CHECK-NEXT:    s_branch .LBB0_8
 ; CHECK-NEXT:  .LBB0_6: ; in Loop: Header=BB0_3 Depth=1
-; CHECK-NEXT:    s_mov_b64 s[18:19], -1
-; CHECK-NEXT:    s_mov_b64 s[16:17], 0
+; CHECK-NEXT:    s_mov_b64 s[16:17], -1
+; CHECK-NEXT:    s_mov_b64 s[18:19], 0
 ; CHECK-NEXT:    s_mov_b64 s[22:23], 0
 ; CHECK-NEXT:  .LBB0_7: ; %bb10
 ; CHECK-NEXT:    ; in Loop: Header=BB0_3 Depth=1
-; CHECK-NEXT:    s_mov_b64 s[18:19], 0
-; CHECK-NEXT:    s_mov_b64 s[16:17], -1
+; CHECK-NEXT:    s_mov_b64 s[18:19], -1
+; CHECK-NEXT:    s_mov_b64 s[16:17], 0
 ; CHECK-NEXT:    s_mov_b64 s[22:23], s[12:13]
 ; CHECK-NEXT:  .LBB0_8: ; %Flow9
 ; CHECK-NEXT:    ; in Loop: Header=BB0_3 Depth=1
@@ -108,10 +108,10 @@ define amdgpu_kernel void @cannot_create_empty_or_backwards_segment(i1 %arg, i1
 ; CHECK-NEXT:    s_andn2_b64 vcc, exec, s[20:21]
 ; CHECK-NEXT:    s_cbranch_vccnz .LBB0_3
 ; CHECK-NEXT:  ; %bb.17: ; %loop.exit.guard
-; CHECK-NEXT:    s_and_b64 vcc, exec, s[18:19]
+; CHECK-NEXT:    s_and_b64 vcc, exec, s[16:17]
 ; CHECK-NEXT:    s_cbranch_vccnz .LBB0_22
 ; CHECK-NEXT:  ; %bb.18: ; %loop.exit.guard5
-; CHECK-NEXT:    s_and_b64 vcc, exec, s[16:17]
+; CHECK-NEXT:    s_and_b64 vcc, exec, s[18:19]
 ; CHECK-NEXT:    s_cbranch_vccnz .LBB0_22
 ; CHECK-NEXT:  ; %bb.19: ; %bb17
 ; CHECK-NEXT:    s_and_b64 vcc, exec, s[6:7]