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[RISCV][VLOPT] Fix passthru operand info for mixed-width instructions #126504

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Merged
merged 1 commit into from
Feb 10, 2025
Merged

[RISCV][VLOPT] Fix passthru operand info for mixed-width instructions #126504

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3 changes: 2 additions & 1 deletion llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -208,7 +208,8 @@ getOperandLog2EEW(const MachineOperand &MO, const MachineRegisterInfo *MRI) {
const bool HasPassthru = RISCVII::isFirstDefTiedToFirstUse(MI.getDesc());
const bool IsTied = RISCVII::isTiedPseudo(MI.getDesc().TSFlags);

bool IsMODef = MO.getOperandNo() == 0;
bool IsMODef = MO.getOperandNo() == 0 ||
(HasPassthru && MO.getOperandNo() == MI.getNumExplicitDefs());

// All mask operands have EEW=1
if (isMaskOperand(MI, MO, MRI))
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8 changes: 4 additions & 4 deletions llvm/test/CodeGen/RISCV/rvv/vl-opt-op-info.mir
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Expand Up @@ -97,7 +97,7 @@ name: vwop_vv_vd_passthru_use
body: |
bb.0:
; CHECK-LABEL: name: vwop_vv_vd_passthru_use
; CHECK: %x:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 4 /* e16 */, 0 /* tu, mu */
; CHECK: %x:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, 1, 4 /* e16 */, 0 /* tu, mu */
; CHECK-NEXT: early-clobber %y:vr = PseudoVWADD_VV_MF2 %x, $noreg, $noreg, 1, 3 /* e8 */, 0 /* tu, mu */
; CHECK-NEXT: %z:vr = PseudoVADD_VV_M1 $noreg, %y, $noreg, 1, 4 /* e16 */, 0 /* tu, mu */
%x:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 4 /* e16 */, 0
Expand Down Expand Up @@ -223,7 +223,7 @@ name: vwop_wv_vd_passthru_use
body: |
bb.0:
; CHECK-LABEL: name: vwop_wv_vd_passthru_use
; CHECK: %x:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 4 /* e16 */, 0 /* tu, mu */
; CHECK: %x:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, 1, 4 /* e16 */, 0 /* tu, mu */
; CHECK-NEXT: early-clobber %y:vr = PseudoVWADD_WV_MF2 %x, $noreg, $noreg, 1, 3 /* e8 */, 0 /* tu, mu */
; CHECK-NEXT: %z:vr = PseudoVADD_VV_M1 $noreg, %y, $noreg, 1, 4 /* e16 */, 0 /* tu, mu */
%x:vr = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 4 /* e16 */, 0
Expand Down Expand Up @@ -1115,7 +1115,7 @@ name: vmop_vv_passthru_use
body: |
bb.0:
; CHECK-LABEL: name: vmop_vv_passthru_use
; CHECK: %x:vrnov0 = PseudoVMAND_MM_B8 $noreg, $noreg, -1, 0 /* e8 */
; CHECK: %x:vrnov0 = PseudoVMAND_MM_B8 $noreg, $noreg, 1, 0 /* e8 */
; CHECK-NEXT: %y:vrnov0 = PseudoVMSEQ_VV_M1_MASK %x, $noreg, $noreg, $noreg, 1, 3 /* e8 */
; CHECK-NEXT: %z:vr = PseudoVMAND_MM_B8 %y, $noreg, 1, 0 /* e8 */
%x:vrnov0 = PseudoVMAND_MM_B8 $noreg, $noreg, -1, 0 /* e1 */
Expand All @@ -1127,7 +1127,7 @@ name: vmop_vv_passthru_use_incompatible_eew
body: |
bb.0:
; CHECK-LABEL: name: vmop_vv_passthru_use_incompatible_eew
; CHECK: %x:vrnov0 = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, 1, 3 /* e8 */, 0 /* tu, mu */
; CHECK: %x:vrnov0 = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 3 /* e8 */, 0 /* tu, mu */
; CHECK-NEXT: %y:vrnov0 = PseudoVMSEQ_VV_M1_MASK %x, $noreg, $noreg, $noreg, 1, 3 /* e8 */
; CHECK-NEXT: %z:vr = PseudoVMAND_MM_B8 %y, $noreg, 1, 0 /* e8 */
%x:vrnov0 = PseudoVADD_VV_M1 $noreg, $noreg, $noreg, -1, 3 /* e8 */, 0
Expand Down