test/CodeGen/RISCV/rvv/add-vsetvli-gpr.mir

# RUN: llc -mtriple riscv64 -mattr=+experimental-v %s  \
# RUN:     -start-before=finalize-isel -stop-after=finalize-isel -o - \
# RUN:     | FileCheck --check-prefix=POST-INSERTER %s

# RUN: llc -mtriple riscv64 -mattr=+experimental-v %s  \
# RUN:     -start-before=finalize-isel -o - \
# RUN:     | FileCheck --check-prefix=CODEGEN %s

--- |
  define void @vadd_vint64m1(
            <vscale x 1 x i64> *%pc,
            <vscale x 1 x i64> *%pa,
            <vscale x 1 x i64> *%pb,
            i64 %vl)
  {
    ret void
  }
...
---
name: vadd_vint64m1
tracksRegLiveness: true
body:             |
  bb.0 (%ir-block.0):
    liveins: $x10, $x11, $x12, $x13

    %3:gpr = COPY $x13
    %2:gpr = COPY $x12
    %1:gpr = COPY $x11
    %0:gpr = COPY $x10
    %4:vr = PseudoVLE64_V_M1 %1, %3, 64, implicit $vl, implicit $vtype :: (load unknown-size from %ir.pa, align 8)
    %5:vr = PseudoVLE64_V_M1 %2, %3, 64, implicit $vl, implicit $vtype :: (load unknown-size from %ir.pb, align 8)
    %6:vr = PseudoVADD_VV_M1 killed %4, killed %5, %3, 64, implicit $vl, implicit $vtype
    PseudoVSE64_V_M1 killed %6, %0, %3, 64, implicit $vl, implicit $vtype :: (store unknown-size into %ir.pc, align 8)
    PseudoRET

...

# POST-INSERTER: %0:gpr = COPY $x13
# POST-INSERTER: %1:gpr = COPY $x12
# POST-INSERTER: %2:gpr = COPY $x11
# POST-INSERTER: %3:gpr = COPY $x10
# POST-INSERTER: dead %7:gpr = PseudoVSETVLI %0, 88, implicit-def $vl, implicit-def $vtype
# POST-INSERTER: %4:vr = PseudoVLE64_V_M1 %2, $noreg, -1, implicit $vl, implicit $vtype :: (load unknown-size from %ir.pa, align 8)
# POST-INSERTER: dead %8:gpr = PseudoVSETVLI %0, 88, implicit-def $vl, implicit-def $vtype
# POST-INSERTER: %5:vr = PseudoVLE64_V_M1 %1, $noreg, -1, implicit $vl, implicit $vtype :: (load unknown-size from %ir.pb, align 8)
# POST-INSERTER: dead %9:gpr = PseudoVSETVLI %0, 88, implicit-def $vl, implicit-def $vtype
# POST-INSERTER: %6:vr = PseudoVADD_VV_M1 killed %4, killed %5, $noreg, -1, implicit $vl, implicit $vtype
# POST-INSERTER: dead %10:gpr = PseudoVSETVLI %0, 88, implicit-def $vl, implicit-def $vtype
# POST-INSERTER: PseudoVSE64_V_M1 killed %6, %3, $noreg, -1, implicit $vl, implicit $vtype :: (store unknown-size into %ir.pc, align 8)

# CODEGEN: vsetvli	a3, a3, e64,m1,ta,mu
# CODEGEN-NEXT: vle64.v	v25, (a1)
# CODEGEN-NEXT: vle64.v	v26, (a2)
# CODEGEN-NEXT: vadd.vv	v25, v25, v26
# CODEGEN-NEXT: vse64.v	v25, (a0)
# CODEGEN-NEXT: ret