; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 3
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -O0 -verify-machineinstrs --stop-after=regallocfast,2 -o - %s | FileCheck -check-prefix=REGALLOC %s
; Test to check if the bb prolog spills are inserted correctly during regalloc.
define i32 @prolog_spill(i32 %arg0, i32 %arg1, i32 %arg2) {
; REGALLOC-LABEL: name: prolog_spill
; REGALLOC: bb.0.bb.0:
; REGALLOC-NEXT: successors: %bb.3(0x40000000), %bb.1(0x40000000)
; REGALLOC-NEXT: liveins: $vgpr0, $vgpr1, $vgpr2
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: SI_SPILL_V32_SAVE killed $vgpr2, %stack.5, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.5, addrspace 5)
; REGALLOC-NEXT: SI_SPILL_V32_SAVE killed $vgpr1, %stack.4, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.4, addrspace 5)
; REGALLOC-NEXT: renamable $sgpr4 = S_MOV_B32 49
; REGALLOC-NEXT: renamable $sgpr4_sgpr5 = V_CMP_GT_I32_e64 killed $vgpr0, killed $sgpr4, implicit $exec
; REGALLOC-NEXT: renamable $sgpr6 = IMPLICIT_DEF
; REGALLOC-NEXT: renamable $vgpr0 = COPY killed renamable $sgpr6
; REGALLOC-NEXT: SI_SPILL_V32_SAVE killed $vgpr0, %stack.3, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
; REGALLOC-NEXT: renamable $sgpr6_sgpr7 = COPY $exec, implicit-def $exec
; REGALLOC-NEXT: renamable $sgpr4_sgpr5 = S_AND_B64 renamable $sgpr6_sgpr7, killed renamable $sgpr4_sgpr5, implicit-def dead $scc
; REGALLOC-NEXT: renamable $sgpr6_sgpr7 = S_XOR_B64 renamable $sgpr4_sgpr5, killed renamable $sgpr6_sgpr7, implicit-def dead $scc
; REGALLOC-NEXT: $vgpr63 = IMPLICIT_DEF
; REGALLOC-NEXT: $vgpr63 = SI_SPILL_S32_TO_VGPR killed $sgpr6, 0, $vgpr63, implicit-def $sgpr6_sgpr7, implicit $sgpr6_sgpr7
; REGALLOC-NEXT: $vgpr63 = SI_SPILL_S32_TO_VGPR killed $sgpr7, 1, $vgpr63, implicit killed $sgpr6_sgpr7
; REGALLOC-NEXT: SI_SPILL_WWM_V32_SAVE killed $vgpr63, %stack.2, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.2, addrspace 5)
; REGALLOC-NEXT: $exec = S_MOV_B64_term killed renamable $sgpr4_sgpr5
; REGALLOC-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; REGALLOC-NEXT: S_BRANCH %bb.3
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: bb.1.Flow:
; REGALLOC-NEXT: successors: %bb.2(0x40000000), %bb.4(0x40000000)
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: $vgpr63 = SI_SPILL_WWM_V32_RESTORE %stack.2, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.2, addrspace 5)
; REGALLOC-NEXT: $sgpr4 = SI_RESTORE_S32_FROM_VGPR $vgpr63, 0, implicit-def $sgpr4_sgpr5
; REGALLOC-NEXT: $sgpr5 = SI_RESTORE_S32_FROM_VGPR $vgpr63, 1
; REGALLOC-NEXT: renamable $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 killed renamable $sgpr4_sgpr5, implicit-def $exec, implicit-def dead $scc, implicit $exec
; REGALLOC-NEXT: $vgpr0 = SI_SPILL_V32_RESTORE %stack.3, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.3, addrspace 5)
; REGALLOC-NEXT: SI_SPILL_V32_SAVE killed $vgpr0, %stack.6, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.6, addrspace 5)
; REGALLOC-NEXT: renamable $sgpr4_sgpr5 = S_AND_B64 $exec, killed renamable $sgpr4_sgpr5, implicit-def dead $scc
; REGALLOC-NEXT: $vgpr63 = SI_SPILL_S32_TO_VGPR killed $sgpr4, 2, $vgpr63, implicit-def $sgpr4_sgpr5, implicit $sgpr4_sgpr5
; REGALLOC-NEXT: $vgpr63 = SI_SPILL_S32_TO_VGPR $sgpr5, 3, $vgpr63, implicit $sgpr4_sgpr5
; REGALLOC-NEXT: SI_SPILL_WWM_V32_SAVE killed $vgpr63, %stack.2, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.2, addrspace 5)
; REGALLOC-NEXT: $exec = S_XOR_B64_term $exec, killed renamable $sgpr4_sgpr5, implicit-def dead $scc
; REGALLOC-NEXT: S_CBRANCH_EXECZ %bb.4, implicit $exec
; REGALLOC-NEXT: S_BRANCH %bb.2
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: bb.2.bb.1:
; REGALLOC-NEXT: successors: %bb.4(0x80000000)
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: $vgpr0 = SI_SPILL_V32_RESTORE %stack.4, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.4, addrspace 5)
; REGALLOC-NEXT: renamable $sgpr4 = S_MOV_B32 10
; REGALLOC-NEXT: renamable $vgpr0 = V_ADD_U32_e64 $vgpr0, killed $sgpr4, 0, implicit $exec
; REGALLOC-NEXT: SI_SPILL_V32_SAVE killed $vgpr0, %stack.6, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.6, addrspace 5)
; REGALLOC-NEXT: S_BRANCH %bb.4
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: bb.3.bb.2:
; REGALLOC-NEXT: successors: %bb.1(0x80000000)
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: $vgpr0 = SI_SPILL_V32_RESTORE %stack.5, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.5, addrspace 5)
; REGALLOC-NEXT: renamable $sgpr4 = S_MOV_B32 20
; REGALLOC-NEXT: renamable $vgpr0 = V_ADD_U32_e64 $vgpr0, killed $sgpr4, 0, implicit $exec
; REGALLOC-NEXT: SI_SPILL_V32_SAVE killed $vgpr0, %stack.3, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
; REGALLOC-NEXT: S_BRANCH %bb.1
; REGALLOC-NEXT: {{ $}}
; REGALLOC-NEXT: bb.4.bb.3:
; REGALLOC-NEXT: $vgpr63 = SI_SPILL_WWM_V32_RESTORE %stack.2, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.2, addrspace 5)
; REGALLOC-NEXT: $sgpr4 = SI_RESTORE_S32_FROM_VGPR $vgpr63, 2, implicit-def $sgpr4_sgpr5
; REGALLOC-NEXT: $sgpr5 = SI_RESTORE_S32_FROM_VGPR killed $vgpr63, 3
; REGALLOC-NEXT: $exec = S_OR_B64 $exec, killed renamable $sgpr4_sgpr5, implicit-def dead $scc
; REGALLOC-NEXT: $vgpr0 = SI_SPILL_V32_RESTORE %stack.6, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.6, addrspace 5)
; REGALLOC-NEXT: renamable $vgpr0 = V_LSHL_ADD_U32_e64 killed $vgpr0, 2, $vgpr0, implicit $exec
; REGALLOC-NEXT: SI_RETURN implicit killed $vgpr0
bb.0:
%cmp = icmp slt i32 %arg0, 50
br i1 %cmp, label %bb.1, label %bb.2
bb.1:
%val1 = add i32 %arg1, 10
br label %bb.3
bb.2:
%val2 = add i32 %arg2, 20
br label %bb.3
bb.3:
%val = phi i32 [ %val1, %bb.1 ], [ %val2, %bb.2 ]
%ret = mul i32 %val, 5;
ret i32 %ret
}
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