--- /dev/null
+# RUN: llc -march=amdgcn -run-pass si-fix-sgpr-copies,si-fold-operands,dead-mi-elimination -verify-machineinstrs -o - %s | FileCheck -check-prefix=GCN %s
+
+# Check that constant is in SGPR registers
+
+# GCN-LABEL: {{^}}name: const_to_sgpr{{$}}
+# GCN: %[[HI:[0-9]+]] = S_MOV_B32 0
+# GCN-NEXT: %[[LO:[0-9]+]] = S_MOV_B32 1048576
+# GCN-NEXT: %[[SGPR_PAIR:[0-9]+]] = REG_SEQUENCE killed %[[LO]], 1, killed %[[HI]], 2
+# GCN-NEXT: V_CMP_LT_U64_e64 killed %{{[0-9]+}}, %[[SGPR_PAIR]], implicit %exec
+
+
+# GCN-LABEL: {{^}}name: const_to_sgpr_multiple_use{{$}}
+# GCN: %[[HI:[0-9]+]] = S_MOV_B32 0
+# GCN-NEXT: %[[LO:[0-9]+]] = S_MOV_B32 1048576
+# GCN-NEXT: %[[SGPR_PAIR:[0-9]+]] = REG_SEQUENCE killed %[[LO]], 1, killed %[[HI]], 2
+# GCN-NEXT: V_CMP_LT_U64_e64 killed %{{[0-9]+}}, %[[SGPR_PAIR]], implicit %exec
+# GCN-NEXT: V_CMP_LT_U64_e64 killed %{{[0-9]+}}, %[[SGPR_PAIR]], implicit %exec
+
+# GCN-LABEL: {{^}}name: const_to_sgpr_subreg{{$}}
+# GCN: %[[OP0:[0-9]+]] = REG_SEQUENCE killed %{{[0-9]+}}, 1, killed %{{[0-9]+}}, 2
+# GCN-NEXT: V_CMP_LT_U32_e64 killed %[[OP0]].sub0, 12, implicit %exec
+
+--- |
+ define amdgpu_kernel void @const_to_sgpr(i32 addrspace(1)* nocapture %arg, i64 %id) {
+ bb:
+ br i1 undef, label %bb1, label %bb2
+
+ bb1: ; preds = %bb
+ br label %bb2
+
+ bb2: ; preds = %bb1, %bb
+ ret void
+ }
+
+ define amdgpu_kernel void @const_to_sgpr_multiple_use(i32 addrspace(1)* nocapture %arg, i64 %id1, i64 %id2) {
+ bb:
+ br i1 undef, label %bb1, label %bb2
+
+ bb1: ; preds = %bb
+ br label %bb2
+
+ bb2: ; preds = %bb1, %bb
+ ret void
+ }
+
+ define amdgpu_kernel void @const_to_sgpr_subreg(i32 addrspace(1)* nocapture %arg, i64 %id) {
+ bb:
+ br i1 undef, label %bb1, label %bb2
+
+ bb1: ; preds = %bb
+ br label %bb2
+
+ bb2: ; preds = %bb1, %bb
+ ret void
+ }
+
+...
+---
+name: const_to_sgpr
+alignment: 0
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: sreg_64 }
+ - { id: 1, class: sreg_64 }
+ - { id: 2, class: vgpr_32 }
+ - { id: 3, class: sgpr_64 }
+ - { id: 4, class: sreg_32_xm0 }
+ - { id: 5, class: sgpr_32 }
+ - { id: 6, class: sreg_64 }
+ - { id: 7, class: sreg_64_xexec }
+ - { id: 8, class: sreg_64_xexec }
+ - { id: 9, class: sreg_32 }
+ - { id: 10, class: sreg_64 }
+ - { id: 11, class: sreg_32_xm0 }
+ - { id: 12, class: sreg_32_xm0 }
+ - { id: 13, class: sreg_32_xm0 }
+ - { id: 14, class: sreg_32_xm0 }
+ - { id: 15, class: sreg_32_xm0 }
+ - { id: 16, class: sreg_32_xm0 }
+ - { id: 17, class: sreg_64 }
+ - { id: 18, class: sreg_32_xm0 }
+ - { id: 19, class: sreg_32_xm0 }
+ - { id: 20, class: sreg_64 }
+ - { id: 21, class: sreg_64 }
+ - { id: 22, class: vreg_64 }
+ - { id: 23, class: sreg_32_xm0 }
+ - { id: 24, class: sreg_64 }
+ - { id: 25, class: sreg_32_xm0 }
+ - { id: 26, class: sreg_32_xm0 }
+ - { id: 27, class: sgpr_64 }
+ - { id: 28, class: sgpr_128 }
+ - { id: 29, class: vgpr_32 }
+ - { id: 30, class: vreg_64 }
+liveins:
+ - { reg: '%vgpr0', virtual-reg: '%2' }
+ - { reg: '%sgpr0_sgpr1', virtual-reg: '%3' }
+body: |
+ bb.0.bb:
+ successors: %bb.1.bb1(0x40000000), %bb.2.bb2(0x40000000)
+ liveins: %vgpr0, %sgpr0_sgpr1
+
+ %3 = COPY %sgpr0_sgpr1
+ %2 = COPY %vgpr0
+ %7 = S_LOAD_DWORDX2_IMM %3, 9, 0
+ %8 = S_LOAD_DWORDX2_IMM %3, 11, 0
+ %6 = COPY %7
+ %9 = S_MOV_B32 0
+ %10 = REG_SEQUENCE %2, 1, killed %9, 2
+ %0 = COPY %10
+ %11 = COPY %10.sub0
+ %12 = COPY %10.sub1
+ %13 = COPY %8.sub0
+ %14 = COPY %8.sub1
+ %15 = S_ADD_U32 killed %11, killed %13, implicit-def %scc
+ %16 = S_ADDC_U32 killed %12, killed %14, implicit-def dead %scc, implicit %scc
+ %17 = REG_SEQUENCE killed %15, 1, killed %16, 2
+ %18 = S_MOV_B32 0
+ %19 = S_MOV_B32 1048576
+ %20 = REG_SEQUENCE killed %19, 1, killed %18, 2
+ %22 = COPY killed %20
+ %21 = V_CMP_LT_U64_e64 killed %17, %22, implicit %exec
+ %1 = SI_IF killed %21, %bb.2.bb2, implicit-def dead %exec, implicit-def dead %scc, implicit %exec
+ S_BRANCH %bb.1.bb1
+
+ bb.1.bb1:
+ successors: %bb.2.bb2(0x80000000)
+
+ %23 = S_MOV_B32 2
+ %24 = S_LSHL_B64 %0, killed %23, implicit-def dead %scc
+ %25 = S_MOV_B32 61440
+ %26 = S_MOV_B32 0
+ %27 = REG_SEQUENCE killed %26, 1, killed %25, 2
+ %28 = REG_SEQUENCE %6, 17, killed %27, 18
+ %29 = V_MOV_B32_e32 0, implicit %exec
+ %30 = COPY %24
+ BUFFER_STORE_DWORD_ADDR64 killed %29, killed %30, killed %28, 0, 0, 0, 0, 0, implicit %exec
+
+ bb.2.bb2:
+ SI_END_CF %1, implicit-def dead %exec, implicit-def dead %scc, implicit %exec
+ S_ENDPGM
+
+...
+---
+name: const_to_sgpr_multiple_use
+alignment: 0
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: sreg_64 }
+ - { id: 1, class: sreg_64 }
+ - { id: 2, class: vgpr_32 }
+ - { id: 3, class: sgpr_64 }
+ - { id: 4, class: sreg_32_xm0 }
+ - { id: 5, class: sgpr_32 }
+ - { id: 6, class: sreg_64 }
+ - { id: 7, class: sreg_64_xexec }
+ - { id: 8, class: sreg_64_xexec }
+ - { id: 9, class: sreg_64_xexec }
+ - { id: 10, class: sreg_32 }
+ - { id: 11, class: sreg_64 }
+ - { id: 12, class: sreg_32_xm0 }
+ - { id: 13, class: sreg_32_xm0 }
+ - { id: 14, class: sreg_32_xm0 }
+ - { id: 15, class: sreg_32_xm0 }
+ - { id: 16, class: sreg_32_xm0 }
+ - { id: 17, class: sreg_32_xm0 }
+ - { id: 18, class: sreg_64 }
+ - { id: 19, class: sreg_32_xm0 }
+ - { id: 20, class: sreg_32_xm0 }
+ - { id: 21, class: sreg_32_xm0 }
+ - { id: 22, class: sreg_32_xm0 }
+ - { id: 23, class: sreg_64 }
+ - { id: 24, class: sreg_32_xm0 }
+ - { id: 25, class: sreg_32_xm0 }
+ - { id: 26, class: sreg_64 }
+ - { id: 27, class: sreg_64 }
+ - { id: 28, class: vreg_64 }
+ - { id: 29, class: sreg_64 }
+ - { id: 30, class: vreg_64 }
+ - { id: 31, class: sreg_64 }
+ - { id: 32, class: sreg_32_xm0 }
+ - { id: 33, class: sreg_64 }
+ - { id: 34, class: sreg_32_xm0 }
+ - { id: 35, class: sreg_32_xm0 }
+ - { id: 36, class: sgpr_64 }
+ - { id: 37, class: sgpr_128 }
+ - { id: 38, class: vgpr_32 }
+ - { id: 39, class: vreg_64 }
+liveins:
+ - { reg: '%vgpr0', virtual-reg: '%2' }
+ - { reg: '%sgpr0_sgpr1', virtual-reg: '%3' }
+body: |
+ bb.0.bb:
+ successors: %bb.1.bb1(0x40000000), %bb.2.bb2(0x40000000)
+ liveins: %vgpr0, %sgpr0_sgpr1
+
+ %3 = COPY %sgpr0_sgpr1
+ %2 = COPY %vgpr0
+ %7 = S_LOAD_DWORDX2_IMM %3, 9, 0
+ %8 = S_LOAD_DWORDX2_IMM %3, 11, 0
+ %9 = S_LOAD_DWORDX2_IMM %3, 13, 0
+ %6 = COPY %7
+ %10 = S_MOV_B32 0
+ %11 = REG_SEQUENCE %2, 1, killed %10, 2
+ %0 = COPY %11
+ %12 = COPY %11.sub0
+ %13 = COPY %11.sub1
+ %14 = COPY %8.sub0
+ %15 = COPY %8.sub1
+ %16 = S_ADD_U32 %12, killed %14, implicit-def %scc
+ %17 = S_ADDC_U32 %13, killed %15, implicit-def dead %scc, implicit %scc
+ %18 = REG_SEQUENCE killed %16, 1, killed %17, 2
+ %19 = COPY %9.sub0
+ %20 = COPY %9.sub1
+ %21 = S_ADD_U32 %12, killed %19, implicit-def %scc
+ %22 = S_ADDC_U32 %13, killed %20, implicit-def dead %scc, implicit %scc
+ %23 = REG_SEQUENCE killed %21, 1, killed %22, 2
+ %24 = S_MOV_B32 0
+ %25 = S_MOV_B32 1048576
+ %26 = REG_SEQUENCE killed %25, 1, killed %24, 2
+ %28 = COPY %26
+ %27 = V_CMP_LT_U64_e64 killed %18, %28, implicit %exec
+ %29 = V_CMP_LT_U64_e64 killed %23, %28, implicit %exec
+ %31 = S_AND_B64 killed %27, killed %29, implicit-def dead %scc
+ %1 = SI_IF killed %31, %bb.2.bb2, implicit-def dead %exec, implicit-def dead %scc, implicit %exec
+ S_BRANCH %bb.1.bb1
+
+ bb.1.bb1:
+ successors: %bb.2.bb2(0x80000000)
+
+ %32 = S_MOV_B32 2
+ %33 = S_LSHL_B64 %0, killed %32, implicit-def dead %scc
+ %34 = S_MOV_B32 61440
+ %35 = S_MOV_B32 0
+ %36 = REG_SEQUENCE killed %35, 1, killed %34, 2
+ %37 = REG_SEQUENCE %6, 17, killed %36, 18
+ %38 = V_MOV_B32_e32 0, implicit %exec
+ %39 = COPY %33
+ BUFFER_STORE_DWORD_ADDR64 killed %38, killed %39, killed %37, 0, 0, 0, 0, 0, implicit %exec
+
+ bb.2.bb2:
+ SI_END_CF %1, implicit-def dead %exec, implicit-def dead %scc, implicit %exec
+ S_ENDPGM
+
+...
+---
+name: const_to_sgpr_subreg
+alignment: 0
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: sreg_64 }
+ - { id: 1, class: sreg_64 }
+ - { id: 2, class: vgpr_32 }
+ - { id: 3, class: sgpr_64 }
+ - { id: 4, class: sreg_32_xm0 }
+ - { id: 5, class: sgpr_32 }
+ - { id: 6, class: sreg_64 }
+ - { id: 7, class: sreg_64_xexec }
+ - { id: 8, class: sreg_64_xexec }
+ - { id: 9, class: sreg_32 }
+ - { id: 10, class: sreg_64 }
+ - { id: 11, class: sreg_32_xm0 }
+ - { id: 12, class: sreg_32_xm0 }
+ - { id: 13, class: sreg_32_xm0 }
+ - { id: 14, class: sreg_32_xm0 }
+ - { id: 15, class: sreg_32_xm0 }
+ - { id: 16, class: sreg_32_xm0 }
+ - { id: 17, class: sreg_64 }
+ - { id: 18, class: sreg_32_xm0 }
+ - { id: 19, class: sreg_32_xm0 }
+ - { id: 20, class: sreg_64 }
+ - { id: 21, class: sreg_64 }
+ - { id: 22, class: vgpr_32 }
+ - { id: 23, class: sreg_32_xm0 }
+ - { id: 24, class: sreg_64 }
+ - { id: 25, class: sreg_32_xm0 }
+ - { id: 26, class: sreg_32_xm0 }
+ - { id: 27, class: sgpr_64 }
+ - { id: 28, class: sgpr_128 }
+ - { id: 29, class: vgpr_32 }
+ - { id: 30, class: vreg_64 }
+liveins:
+ - { reg: '%vgpr0', virtual-reg: '%2' }
+ - { reg: '%sgpr0_sgpr1', virtual-reg: '%3' }
+body: |
+ bb.0.bb:
+ successors: %bb.1.bb1(0x40000000), %bb.2.bb2(0x40000000)
+ liveins: %vgpr0, %sgpr0_sgpr1
+
+ %3 = COPY %sgpr0_sgpr1
+ %2 = COPY %vgpr0
+ %7 = S_LOAD_DWORDX2_IMM %3, 9, 0
+ %8 = S_LOAD_DWORDX2_IMM %3, 11, 0
+ %6 = COPY %7
+ %9 = S_MOV_B32 0
+ %10 = REG_SEQUENCE %2, 1, killed %9, 2
+ %0 = COPY %10
+ %11 = COPY %10.sub0
+ %12 = COPY %10.sub1
+ %13 = COPY %8.sub0
+ %14 = COPY %8.sub1
+ %15 = S_ADD_U32 killed %11, killed %13, implicit-def %scc
+ %16 = S_ADDC_U32 killed %12, killed %14, implicit-def dead %scc, implicit %scc
+ %17 = REG_SEQUENCE killed %15, 1, killed %16, 2
+ %18 = S_MOV_B32 12
+ %19 = S_MOV_B32 1048576
+ %20 = REG_SEQUENCE killed %19, 1, killed %18, 2
+ %22 = COPY killed %20.sub1
+ %21 = V_CMP_LT_U32_e64 killed %17.sub0, %22, implicit %exec
+ %1 = SI_IF killed %21, %bb.2.bb2, implicit-def dead %exec, implicit-def dead %scc, implicit %exec
+ S_BRANCH %bb.1.bb1
+
+ bb.1.bb1:
+ successors: %bb.2.bb2(0x80000000)
+
+ %23 = S_MOV_B32 2
+ %24 = S_LSHL_B64 %0, killed %23, implicit-def dead %scc
+ %25 = S_MOV_B32 61440
+ %26 = S_MOV_B32 0
+ %27 = REG_SEQUENCE killed %26, 1, killed %25, 2
+ %28 = REG_SEQUENCE %6, 17, killed %27, 18
+ %29 = V_MOV_B32_e32 0, implicit %exec
+ %30 = COPY %24
+ BUFFER_STORE_DWORD_ADDR64 killed %29, killed %30, killed %28, 0, 0, 0, 0, 0, implicit %exec
+
+ bb.2.bb2:
+ SI_END_CF %1, implicit-def dead %exec, implicit-def dead %scc, implicit %exec
+ S_ENDPGM
+
+...