[llvm] [RISCV] Remove CalleeSavedInfo for Zcmp/save-restore-libcalls registers (PR #79535)
via llvm-commits
llvm-commits at lists.llvm.org
Thu Jan 25 17:19:07 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-risc-v
Author: Visoiu Mistrih Francis (francisvm)
<details>
<summary>Changes</summary>
Registers that are pushed/popped by Zcmp or libcalls have pre-defined frame indices that are never allocated in MachineFrameInfo. They're being used throughout PEI, but the rest of codegen doesn't work that way and expects each frame index to be a valid index in MFI.
This patch keeps it local to PEI and removes them from the CalleeSavedInfo list at the end of the pass.
Before this pass, any MIR testing post-PEI is broken and asserts (see issue #<!-- -->79491).
---
Full diff: https://github.com/llvm/llvm-project/pull/79535.diff
3 Files Affected:
- (modified) llvm/lib/Target/RISCV/RISCVFrameLowering.cpp (+24)
- (modified) llvm/lib/Target/RISCV/RISCVFrameLowering.h (+4)
- (added) llvm/test/CodeGen/RISCV/zcmp-cm-push-pop.mir (+216)
``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp b/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
index d793c0b7377baf0..a017ec0f43d30e7 100644
--- a/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
@@ -1252,6 +1252,30 @@ void RISCVFrameLowering::processFunctionBeforeFrameFinalized(
RVFI->setCalleeSavedStackSize(Size);
}
+void RISCVFrameLowering::processFunctionBeforeFrameIndicesReplaced(
+ MachineFunction &MF, RegScavenger *RS) const {
+ // Remove CalleeSavedInfo for registers saved by Zcmp or save/restore
+ // libcalls.
+ MachineFrameInfo &MFI = MF.getFrameInfo();
+ const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
+ const auto *RVFI = MF.getInfo<RISCVMachineFunctionInfo>();
+ if (!RVFI->isPushable(MF) && !RVFI->useSaveRestoreLibCalls(MF))
+ return;
+ const std::vector<CalleeSavedInfo> &CSIs = MFI.getCalleeSavedInfo();
+ std::vector<CalleeSavedInfo> NewCSIs;
+ for (const auto &CSI : CSIs) {
+ // Skip CSRs that have fake a frame index.
+ [[maybe_unused]] int ReservedFI = 0;
+ if (TRI->hasReservedSpillSlot(MF, CSI.getReg(), ReservedFI)) {
+ assert(CSI.getFrameIdx() == ReservedFI &&
+ "Reserved CSR spill slot frame index mismatch in CSI");
+ continue;
+ }
+ NewCSIs.push_back(CSI);
+ }
+ MFI.setCalleeSavedInfo(std::move(NewCSIs));
+}
+
// Not preserve stack space within prologue for outgoing variables when the
// function contains variable size objects or there are vector objects accessed
// by the frame pointer.
diff --git a/llvm/lib/Target/RISCV/RISCVFrameLowering.h b/llvm/lib/Target/RISCV/RISCVFrameLowering.h
index 5c1c7317d24bc6a..a784479f111b115 100644
--- a/llvm/lib/Target/RISCV/RISCVFrameLowering.h
+++ b/llvm/lib/Target/RISCV/RISCVFrameLowering.h
@@ -37,6 +37,10 @@ class RISCVFrameLowering : public TargetFrameLowering {
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
RegScavenger *RS) const override;
+ void
+ processFunctionBeforeFrameIndicesReplaced(MachineFunction &MF,
+ RegScavenger *RS) const override;
+
bool hasFP(const MachineFunction &MF) const override;
bool hasBP(const MachineFunction &MF) const;
diff --git a/llvm/test/CodeGen/RISCV/zcmp-cm-push-pop.mir b/llvm/test/CodeGen/RISCV/zcmp-cm-push-pop.mir
new file mode 100644
index 000000000000000..cf14b9b841c2344
--- /dev/null
+++ b/llvm/test/CodeGen/RISCV/zcmp-cm-push-pop.mir
@@ -0,0 +1,216 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
+# RUN: llc -mtriple=riscv32 -mattr=+zcmp -x mir -run-pass=prologepilog -verify-machineinstrs -o - %s \
+# RUN: | FileCheck -check-prefixes=CHECK-ZCMP32 %s
+# RUN: llc -mtriple=riscv64 -mattr=+zcmp -x mir -run-pass=prologepilog -verify-machineinstrs -o - %s \
+# RUN: | FileCheck -check-prefixes=CHECK-ZCMP64 %s
+# RUN: llc -mtriple=riscv32 -x mir -run-pass=prologepilog -verify-machineinstrs -o - %s \
+# RUN: | FileCheck -check-prefixes=CHECK-NO-ZCMP32 %s
+# RUN: llc -mtriple=riscv64 -x mir -run-pass=prologepilog -verify-machineinstrs -o - %s \
+# RUN: | FileCheck -check-prefixes=CHECK-NO-ZCMP64 %s
+---
+name: push_rvlist15
+tracksRegLiveness: true
+body: |
+ bb.0:
+ ; CHECK-ZCMP32-LABEL: name: push_rvlist15
+ ; CHECK-ZCMP32: liveins: $x1, $x8, $x9, $x18, $x19, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27
+ ; CHECK-ZCMP32-NEXT: {{ $}}
+ ; CHECK-ZCMP32-NEXT: frame-setup CM_PUSH 15, 0, implicit $x1, implicit $x8, implicit $x9, implicit $x18, implicit $x19, implicit $x20, implicit $x21, implicit $x22, implicit $x23, implicit $x24, implicit $x25, implicit $x26, implicit $x27
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 64
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x1, -52
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x8, -48
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x9, -44
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x18, -40
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x19, -36
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x20, -32
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x21, -28
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x22, -24
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x23, -20
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x24, -16
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x25, -12
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x26, -8
+ ; CHECK-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x27, -4
+ ; CHECK-ZCMP32-NEXT: $x1 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x8 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x9 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x18 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x19 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x20 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x21 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x22 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x23 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x24 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x25 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x26 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: $x27 = IMPLICIT_DEF
+ ; CHECK-ZCMP32-NEXT: frame-destroy CM_POP 15, 0, implicit-def $x1, implicit-def $x8, implicit-def $x9, implicit-def $x18, implicit-def $x19, implicit-def $x20, implicit-def $x21, implicit-def $x22, implicit-def $x23, implicit-def $x24, implicit-def $x25, implicit-def $x26, implicit-def $x27
+ ; CHECK-ZCMP32-NEXT: PseudoRET
+ ;
+ ; CHECK-ZCMP64-LABEL: name: push_rvlist15
+ ; CHECK-ZCMP64: liveins: $x1, $x8, $x9, $x18, $x19, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27
+ ; CHECK-ZCMP64-NEXT: {{ $}}
+ ; CHECK-ZCMP64-NEXT: frame-setup CM_PUSH 15, 0, implicit $x1, implicit $x8, implicit $x9, implicit $x18, implicit $x19, implicit $x20, implicit $x21, implicit $x22, implicit $x23, implicit $x24, implicit $x25, implicit $x26, implicit $x27
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 112
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x1, -104
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x8, -96
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x9, -88
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x18, -80
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x19, -72
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x20, -64
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x21, -56
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x22, -48
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x23, -40
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x24, -32
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x25, -24
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x26, -16
+ ; CHECK-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x27, -8
+ ; CHECK-ZCMP64-NEXT: $x1 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x8 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x9 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x18 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x19 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x20 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x21 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x22 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x23 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x24 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x25 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x26 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: $x27 = IMPLICIT_DEF
+ ; CHECK-ZCMP64-NEXT: frame-destroy CM_POP 15, 0, implicit-def $x1, implicit-def $x8, implicit-def $x9, implicit-def $x18, implicit-def $x19, implicit-def $x20, implicit-def $x21, implicit-def $x22, implicit-def $x23, implicit-def $x24, implicit-def $x25, implicit-def $x26, implicit-def $x27
+ ; CHECK-ZCMP64-NEXT: PseudoRET
+ ;
+ ; CHECK-NO-ZCMP32-LABEL: name: push_rvlist15
+ ; CHECK-NO-ZCMP32: liveins: $x1, $x8, $x9, $x18, $x19, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27
+ ; CHECK-NO-ZCMP32-NEXT: {{ $}}
+ ; CHECK-NO-ZCMP32-NEXT: $x2 = frame-setup ADDI $x2, -64
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 64
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x1, $x2, 60 :: (store (s32) into %stack.0)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x8, $x2, 56 :: (store (s32) into %stack.1)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x9, $x2, 52 :: (store (s32) into %stack.2)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x18, $x2, 48 :: (store (s32) into %stack.3)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x19, $x2, 44 :: (store (s32) into %stack.4)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x20, $x2, 40 :: (store (s32) into %stack.5)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x21, $x2, 36 :: (store (s32) into %stack.6)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x22, $x2, 32 :: (store (s32) into %stack.7)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x23, $x2, 28 :: (store (s32) into %stack.8)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x24, $x2, 24 :: (store (s32) into %stack.9)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x25, $x2, 20 :: (store (s32) into %stack.10)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x26, $x2, 16 :: (store (s32) into %stack.11)
+ ; CHECK-NO-ZCMP32-NEXT: SW killed $x27, $x2, 12 :: (store (s32) into %stack.12)
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x1, -4
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x8, -8
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x9, -12
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x18, -16
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x19, -20
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x20, -24
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x21, -28
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x22, -32
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x23, -36
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x24, -40
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x25, -44
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x26, -48
+ ; CHECK-NO-ZCMP32-NEXT: frame-setup CFI_INSTRUCTION offset $x27, -52
+ ; CHECK-NO-ZCMP32-NEXT: $x1 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x8 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x9 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x18 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x19 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x20 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x21 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x22 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x23 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x24 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x25 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x26 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x27 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP32-NEXT: $x1 = LW $x2, 60 :: (load (s32) from %stack.0)
+ ; CHECK-NO-ZCMP32-NEXT: $x8 = LW $x2, 56 :: (load (s32) from %stack.1)
+ ; CHECK-NO-ZCMP32-NEXT: $x9 = LW $x2, 52 :: (load (s32) from %stack.2)
+ ; CHECK-NO-ZCMP32-NEXT: $x18 = LW $x2, 48 :: (load (s32) from %stack.3)
+ ; CHECK-NO-ZCMP32-NEXT: $x19 = LW $x2, 44 :: (load (s32) from %stack.4)
+ ; CHECK-NO-ZCMP32-NEXT: $x20 = LW $x2, 40 :: (load (s32) from %stack.5)
+ ; CHECK-NO-ZCMP32-NEXT: $x21 = LW $x2, 36 :: (load (s32) from %stack.6)
+ ; CHECK-NO-ZCMP32-NEXT: $x22 = LW $x2, 32 :: (load (s32) from %stack.7)
+ ; CHECK-NO-ZCMP32-NEXT: $x23 = LW $x2, 28 :: (load (s32) from %stack.8)
+ ; CHECK-NO-ZCMP32-NEXT: $x24 = LW $x2, 24 :: (load (s32) from %stack.9)
+ ; CHECK-NO-ZCMP32-NEXT: $x25 = LW $x2, 20 :: (load (s32) from %stack.10)
+ ; CHECK-NO-ZCMP32-NEXT: $x26 = LW $x2, 16 :: (load (s32) from %stack.11)
+ ; CHECK-NO-ZCMP32-NEXT: $x27 = LW $x2, 12 :: (load (s32) from %stack.12)
+ ; CHECK-NO-ZCMP32-NEXT: $x2 = frame-destroy ADDI $x2, 64
+ ; CHECK-NO-ZCMP32-NEXT: PseudoRET
+ ;
+ ; CHECK-NO-ZCMP64-LABEL: name: push_rvlist15
+ ; CHECK-NO-ZCMP64: liveins: $x1, $x8, $x9, $x18, $x19, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27
+ ; CHECK-NO-ZCMP64-NEXT: {{ $}}
+ ; CHECK-NO-ZCMP64-NEXT: $x2 = frame-setup ADDI $x2, -112
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION def_cfa_offset 112
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x1, $x2, 104 :: (store (s64) into %stack.0)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x8, $x2, 96 :: (store (s64) into %stack.1)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x9, $x2, 88 :: (store (s64) into %stack.2)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x18, $x2, 80 :: (store (s64) into %stack.3)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x19, $x2, 72 :: (store (s64) into %stack.4)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x20, $x2, 64 :: (store (s64) into %stack.5)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x21, $x2, 56 :: (store (s64) into %stack.6)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x22, $x2, 48 :: (store (s64) into %stack.7)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x23, $x2, 40 :: (store (s64) into %stack.8)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x24, $x2, 32 :: (store (s64) into %stack.9)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x25, $x2, 24 :: (store (s64) into %stack.10)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x26, $x2, 16 :: (store (s64) into %stack.11)
+ ; CHECK-NO-ZCMP64-NEXT: SD killed $x27, $x2, 8 :: (store (s64) into %stack.12)
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x1, -8
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x8, -16
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x9, -24
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x18, -32
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x19, -40
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x20, -48
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x21, -56
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x22, -64
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x23, -72
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x24, -80
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x25, -88
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x26, -96
+ ; CHECK-NO-ZCMP64-NEXT: frame-setup CFI_INSTRUCTION offset $x27, -104
+ ; CHECK-NO-ZCMP64-NEXT: $x1 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x8 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x9 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x18 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x19 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x20 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x21 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x22 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x23 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x24 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x25 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x26 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x27 = IMPLICIT_DEF
+ ; CHECK-NO-ZCMP64-NEXT: $x1 = LD $x2, 104 :: (load (s64) from %stack.0)
+ ; CHECK-NO-ZCMP64-NEXT: $x8 = LD $x2, 96 :: (load (s64) from %stack.1)
+ ; CHECK-NO-ZCMP64-NEXT: $x9 = LD $x2, 88 :: (load (s64) from %stack.2)
+ ; CHECK-NO-ZCMP64-NEXT: $x18 = LD $x2, 80 :: (load (s64) from %stack.3)
+ ; CHECK-NO-ZCMP64-NEXT: $x19 = LD $x2, 72 :: (load (s64) from %stack.4)
+ ; CHECK-NO-ZCMP64-NEXT: $x20 = LD $x2, 64 :: (load (s64) from %stack.5)
+ ; CHECK-NO-ZCMP64-NEXT: $x21 = LD $x2, 56 :: (load (s64) from %stack.6)
+ ; CHECK-NO-ZCMP64-NEXT: $x22 = LD $x2, 48 :: (load (s64) from %stack.7)
+ ; CHECK-NO-ZCMP64-NEXT: $x23 = LD $x2, 40 :: (load (s64) from %stack.8)
+ ; CHECK-NO-ZCMP64-NEXT: $x24 = LD $x2, 32 :: (load (s64) from %stack.9)
+ ; CHECK-NO-ZCMP64-NEXT: $x25 = LD $x2, 24 :: (load (s64) from %stack.10)
+ ; CHECK-NO-ZCMP64-NEXT: $x26 = LD $x2, 16 :: (load (s64) from %stack.11)
+ ; CHECK-NO-ZCMP64-NEXT: $x27 = LD $x2, 8 :: (load (s64) from %stack.12)
+ ; CHECK-NO-ZCMP64-NEXT: $x2 = frame-destroy ADDI $x2, 112
+ ; CHECK-NO-ZCMP64-NEXT: PseudoRET
+ $x1 = IMPLICIT_DEF
+ $x8 = IMPLICIT_DEF
+ $x9 = IMPLICIT_DEF
+ $x18 = IMPLICIT_DEF
+ $x19 = IMPLICIT_DEF
+ $x20 = IMPLICIT_DEF
+ $x21 = IMPLICIT_DEF
+ $x22 = IMPLICIT_DEF
+ $x23 = IMPLICIT_DEF
+ $x24 = IMPLICIT_DEF
+ $x25 = IMPLICIT_DEF
+ $x26 = IMPLICIT_DEF
+ $x27 = IMPLICIT_DEF
+ PseudoRET
+...
``````````
</details>
https://github.com/llvm/llvm-project/pull/79535
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