[llvm] [AMDGPU] Introduce AMDGPU::SGPR_SPILL asm comment flag (PR #67091)
Yashwant Singh via llvm-commits
llvm-commits at lists.llvm.org
Thu Sep 21 23:57:53 PDT 2023
https://github.com/yashssh created https://github.com/llvm/llvm-project/pull/67091
Use this flag to give more context to implicit def comments in assembly.
Reviewed on phabricator:
https://reviews.llvm.org/D153754
>From e0fbcb513f1cba321c440a94ca1aff5beab8a47f Mon Sep 17 00:00:00 2001
From: Yashwant Singh <Yashwant.Singh at amd.com>
Date: Fri, 22 Sep 2023 12:15:15 +0530
Subject: [PATCH] [AMDGPU] Introduce AMDGPU::SGPR_SPILL asm comment flag
Use this flag to give more context to implicit def comments
in assembly.
Reviewed By: arsenm
Differential Revision: https://reviews.llvm.org/D153754
---
llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp | 15 +++++++++++++++
llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h | 2 ++
llvm/lib/Target/AMDGPU/SIInstrInfo.h | 7 +++++++
llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp | 2 ++
.../GlobalISel/image-waterfall-loop-O0.ll | 2 +-
.../test/CodeGen/AMDGPU/cf-loop-on-constant.ll | 10 +++++-----
llvm/test/CodeGen/AMDGPU/collapse-endcf.ll | 12 ++++++------
llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll | 4 ++--
.../kernel-vgpr-spill-mubuf-with-voffset.ll | 2 +-
...buf-legalize-operands-non-ptr-intrinsics.ll | 6 +++---
.../CodeGen/AMDGPU/mubuf-legalize-operands.ll | 6 +++---
.../CodeGen/AMDGPU/need-fp-from-vgpr-spills.ll | 6 +++---
.../AMDGPU/partial-sgpr-to-vgpr-spills.ll | 18 +++++++++---------
.../AMDGPU/scc-clobbered-sgpr-to-vmem-spill.ll | 2 +-
.../test/CodeGen/AMDGPU/sgpr-spill-no-vgprs.ll | 4 ++--
.../sgpr-spill-update-only-slot-indexes.ll | 2 +-
.../AMDGPU/sgpr-spills-split-regalloc.ll | 2 +-
.../spill-vgpr-to-agpr-update-regscavenger.ll | 2 +-
llvm/test/CodeGen/AMDGPU/swdev380865.ll | 2 +-
.../AMDGPU/vgpr-spill-placement-issue61083.ll | 2 +-
.../CodeGen/AMDGPU/vgpr_constant_to_sgpr.ll | 2 +-
.../CodeGen/AMDGPU/whole-wave-register-copy.ll | 2 +-
.../AMDGPU/whole-wave-register-spill.ll | 4 ++--
llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll | 4 ++--
24 files changed, 73 insertions(+), 47 deletions(-)
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp b/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
index b2360ce30fd6edb..445279dcc0be149 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
@@ -245,6 +245,21 @@ void AMDGPUAsmPrinter::emitFunctionBodyEnd() {
Streamer.popSection();
}
+void AMDGPUAsmPrinter::emitImplicitDef(const MachineInstr *MI) const {
+ Register RegNo = MI->getOperand(0).getReg();
+
+ SmallString<128> Str;
+ raw_svector_ostream OS(Str);
+ OS << "implicit-def: "
+ << printReg(RegNo, MF->getSubtarget().getRegisterInfo());
+
+ if (MI->getAsmPrinterFlags() & AMDGPU::SGPR_SPILL)
+ OS << " : SGPR spill to VGPR lane";
+
+ OutStreamer->AddComment(OS.str());
+ OutStreamer->addBlankLine();
+}
+
void AMDGPUAsmPrinter::emitFunctionEntryLabel() {
if (TM.getTargetTriple().getOS() == Triple::AMDHSA) {
AsmPrinter::emitFunctionEntryLabel();
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h b/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
index d490209ce35ecf0..dc2fadc0f935242 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.h
@@ -116,6 +116,8 @@ class AMDGPUAsmPrinter final : public AsmPrinter {
void emitFunctionBodyEnd() override;
+ void emitImplicitDef(const MachineInstr *MI) const override;
+
void emitFunctionEntryLabel() override;
void emitBasicBlockStart(const MachineBasicBlock &MBB) override;
diff --git a/llvm/lib/Target/AMDGPU/SIInstrInfo.h b/llvm/lib/Target/AMDGPU/SIInstrInfo.h
index e85917a4c0f3296..a4f59fc3513d646 100644
--- a/llvm/lib/Target/AMDGPU/SIInstrInfo.h
+++ b/llvm/lib/Target/AMDGPU/SIInstrInfo.h
@@ -1397,6 +1397,13 @@ namespace AMDGPU {
} // end namespace AMDGPU
+namespace AMDGPU {
+enum AsmComments {
+ // For sgpr to vgpr spill instructions
+ SGPR_SPILL = MachineInstr::TAsmComments
+};
+} // namespace AMDGPU
+
namespace SI {
namespace KernelInputOffsets {
diff --git a/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp b/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
index 47d28d5d0eab590..b99d1ee75ef5a5b 100644
--- a/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
+++ b/llvm/lib/Target/AMDGPU/SILowerSGPRSpills.cpp
@@ -281,6 +281,8 @@ void SILowerSGPRSpills::extendWWMVirtRegLiveness(MachineFunction &MF,
auto MIB = BuildMI(*SaveBlock, *InsertBefore, InsertBefore->getDebugLoc(),
TII->get(AMDGPU::IMPLICIT_DEF), Reg);
MFI->setFlag(Reg, AMDGPU::VirtRegFlag::WWM_REG);
+ // Set SGPR_SPILL asm printer flag
+ MIB->setAsmPrinterFlag(AMDGPU::SGPR_SPILL);
if (LIS) {
LIS->InsertMachineInstrInMaps(*MIB);
}
diff --git a/llvm/test/CodeGen/AMDGPU/GlobalISel/image-waterfall-loop-O0.ll b/llvm/test/CodeGen/AMDGPU/GlobalISel/image-waterfall-loop-O0.ll
index 1d1ff4251c53a88..b19230c2e876c4f 100644
--- a/llvm/test/CodeGen/AMDGPU/GlobalISel/image-waterfall-loop-O0.ll
+++ b/llvm/test/CodeGen/AMDGPU/GlobalISel/image-waterfall-loop-O0.ll
@@ -15,7 +15,7 @@ define <4 x float> @waterfall_loop(<8 x i32> %vgpr_srd) {
; CHECK-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:80 ; 4-byte Folded Spill
; CHECK-NEXT: buffer_store_dword v2, off, s[0:3], s32 offset:84 ; 4-byte Folded Spill
; CHECK-NEXT: s_mov_b32 exec_lo, s4
-; CHECK-NEXT: ; implicit-def: $vgpr8
+; CHECK-NEXT: ; implicit-def: $vgpr8 : SGPR spill to VGPR lane
; CHECK-NEXT: v_mov_b32_e32 v8, v0
; CHECK-NEXT: s_or_saveexec_b32 s21, -1
; CHECK-NEXT: buffer_load_dword v0, off, s[0:3], s32 ; 4-byte Folded Reload
diff --git a/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll b/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll
index c9f9078281da255..c6b17b40ffb6ae5 100644
--- a/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll
+++ b/llvm/test/CodeGen/AMDGPU/cf-loop-on-constant.ll
@@ -36,7 +36,7 @@ define amdgpu_kernel void @test_loop(ptr addrspace(3) %ptr, i32 %n) nounwind {
; GCN_DBG-NEXT: s_mov_b32 s15, 0xe8f000
; GCN_DBG-NEXT: s_add_u32 s12, s12, s11
; GCN_DBG-NEXT: s_addc_u32 s13, s13, 0
-; GCN_DBG-NEXT: ; implicit-def: $vgpr0
+; GCN_DBG-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN_DBG-NEXT: s_load_dword s0, s[4:5], 0x9
; GCN_DBG-NEXT: s_waitcnt lgkmcnt(0)
; GCN_DBG-NEXT: v_writelane_b32 v0, s0, 0
@@ -144,7 +144,7 @@ define amdgpu_kernel void @loop_const_true(ptr addrspace(3) %ptr, i32 %n) nounwi
; GCN_DBG-NEXT: s_mov_b32 s15, 0xe8f000
; GCN_DBG-NEXT: s_add_u32 s12, s12, s11
; GCN_DBG-NEXT: s_addc_u32 s13, s13, 0
-; GCN_DBG-NEXT: ; implicit-def: $vgpr0
+; GCN_DBG-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN_DBG-NEXT: s_load_dword s0, s[4:5], 0x9
; GCN_DBG-NEXT: s_waitcnt lgkmcnt(0)
; GCN_DBG-NEXT: v_writelane_b32 v0, s0, 0
@@ -232,7 +232,7 @@ define amdgpu_kernel void @loop_const_false(ptr addrspace(3) %ptr, i32 %n) nounw
; GCN_DBG-NEXT: s_mov_b32 s15, 0xe8f000
; GCN_DBG-NEXT: s_add_u32 s12, s12, s11
; GCN_DBG-NEXT: s_addc_u32 s13, s13, 0
-; GCN_DBG-NEXT: ; implicit-def: $vgpr0
+; GCN_DBG-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN_DBG-NEXT: s_load_dword s0, s[4:5], 0x9
; GCN_DBG-NEXT: s_waitcnt lgkmcnt(0)
; GCN_DBG-NEXT: v_writelane_b32 v0, s0, 0
@@ -321,7 +321,7 @@ define amdgpu_kernel void @loop_const_undef(ptr addrspace(3) %ptr, i32 %n) nounw
; GCN_DBG-NEXT: s_mov_b32 s15, 0xe8f000
; GCN_DBG-NEXT: s_add_u32 s12, s12, s11
; GCN_DBG-NEXT: s_addc_u32 s13, s13, 0
-; GCN_DBG-NEXT: ; implicit-def: $vgpr0
+; GCN_DBG-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN_DBG-NEXT: s_load_dword s0, s[4:5], 0x9
; GCN_DBG-NEXT: s_waitcnt lgkmcnt(0)
; GCN_DBG-NEXT: v_writelane_b32 v0, s0, 0
@@ -422,7 +422,7 @@ define amdgpu_kernel void @loop_arg_0(ptr addrspace(3) %ptr, i32 %n) nounwind {
; GCN_DBG-NEXT: s_mov_b32 s15, 0xe8f000
; GCN_DBG-NEXT: s_add_u32 s12, s12, s11
; GCN_DBG-NEXT: s_addc_u32 s13, s13, 0
-; GCN_DBG-NEXT: ; implicit-def: $vgpr0
+; GCN_DBG-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN_DBG-NEXT: s_load_dword s0, s[4:5], 0x9
; GCN_DBG-NEXT: s_waitcnt lgkmcnt(0)
; GCN_DBG-NEXT: v_writelane_b32 v0, s0, 0
diff --git a/llvm/test/CodeGen/AMDGPU/collapse-endcf.ll b/llvm/test/CodeGen/AMDGPU/collapse-endcf.ll
index 74d62ffc580296b..73d5088141cdb31 100644
--- a/llvm/test/CodeGen/AMDGPU/collapse-endcf.ll
+++ b/llvm/test/CodeGen/AMDGPU/collapse-endcf.ll
@@ -48,7 +48,7 @@ define amdgpu_kernel void @simple_nested_if(ptr addrspace(1) nocapture %arg) {
; GCN-O0-NEXT: s_mov_b32 s15, 0xe8f000
; GCN-O0-NEXT: s_add_u32 s12, s12, s11
; GCN-O0-NEXT: s_addc_u32 s13, s13, 0
-; GCN-O0-NEXT: ; implicit-def: $vgpr1
+; GCN-O0-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_mov_b32_e32 v1, v0
; GCN-O0-NEXT: s_or_saveexec_b64 s[8:9], -1
; GCN-O0-NEXT: buffer_load_dword v0, off, s[12:15], 0 offset:4 ; 4-byte Folded Reload
@@ -221,7 +221,7 @@ define amdgpu_kernel void @uncollapsable_nested_if(ptr addrspace(1) nocapture %a
; GCN-O0-NEXT: s_mov_b32 s15, 0xe8f000
; GCN-O0-NEXT: s_add_u32 s12, s12, s11
; GCN-O0-NEXT: s_addc_u32 s13, s13, 0
-; GCN-O0-NEXT: ; implicit-def: $vgpr1
+; GCN-O0-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_mov_b32_e32 v1, v0
; GCN-O0-NEXT: s_or_saveexec_b64 s[8:9], -1
; GCN-O0-NEXT: buffer_load_dword v0, off, s[12:15], 0 offset:4 ; 4-byte Folded Reload
@@ -430,7 +430,7 @@ define amdgpu_kernel void @nested_if_if_else(ptr addrspace(1) nocapture %arg) {
; GCN-O0-NEXT: s_mov_b32 s15, 0xe8f000
; GCN-O0-NEXT: s_add_u32 s12, s12, s11
; GCN-O0-NEXT: s_addc_u32 s13, s13, 0
-; GCN-O0-NEXT: ; implicit-def: $vgpr1
+; GCN-O0-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_mov_b32_e32 v1, v0
; GCN-O0-NEXT: s_or_saveexec_b64 s[6:7], -1
; GCN-O0-NEXT: buffer_load_dword v0, off, s[12:15], 0 offset:4 ; 4-byte Folded Reload
@@ -676,7 +676,7 @@ define amdgpu_kernel void @nested_if_else_if(ptr addrspace(1) nocapture %arg) {
; GCN-O0-NEXT: s_mov_b32 s15, 0xe8f000
; GCN-O0-NEXT: s_add_u32 s12, s12, s11
; GCN-O0-NEXT: s_addc_u32 s13, s13, 0
-; GCN-O0-NEXT: ; implicit-def: $vgpr1
+; GCN-O0-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_mov_b32_e32 v1, v0
; GCN-O0-NEXT: s_or_saveexec_b64 s[8:9], -1
; GCN-O0-NEXT: buffer_load_dword v0, off, s[12:15], 0 offset:4 ; 4-byte Folded Reload
@@ -931,7 +931,7 @@ define amdgpu_kernel void @s_endpgm_unsafe_barrier(ptr addrspace(1) nocapture %a
; GCN-O0-NEXT: s_mov_b32 s15, 0xe8f000
; GCN-O0-NEXT: s_add_u32 s12, s12, s11
; GCN-O0-NEXT: s_addc_u32 s13, s13, 0
-; GCN-O0-NEXT: ; implicit-def: $vgpr1
+; GCN-O0-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_mov_b32_e32 v1, v0
; GCN-O0-NEXT: s_or_saveexec_b64 s[6:7], -1
; GCN-O0-NEXT: buffer_load_dword v0, off, s[12:15], 0 offset:4 ; 4-byte Folded Reload
@@ -1080,7 +1080,7 @@ define void @scc_liveness(i32 %arg) local_unnamed_addr #0 {
; GCN-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:72 ; 4-byte Folded Spill
; GCN-O0-NEXT: buffer_store_dword v4, off, s[0:3], s32 offset:76 ; 4-byte Folded Spill
; GCN-O0-NEXT: s_mov_b64 exec, s[4:5]
-; GCN-O0-NEXT: ; implicit-def: $vgpr1
+; GCN-O0-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_mov_b32_e32 v1, v0
; GCN-O0-NEXT: s_or_saveexec_b64 s[14:15], -1
; GCN-O0-NEXT: s_waitcnt expcnt(1)
diff --git a/llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll b/llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll
index 8acc38eaf017044..b3cca5ff2429b59 100644
--- a/llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll
+++ b/llvm/test/CodeGen/AMDGPU/flat-scratch-init.ll
@@ -117,7 +117,7 @@ define amdgpu_kernel void @test(ptr addrspace(1) %out, i32 %in) {
; FLAT_SCR_OPT-NEXT: s_setreg_b32 hwreg(HW_REG_FLAT_SCR_LO), s2
; FLAT_SCR_OPT-NEXT: s_setreg_b32 hwreg(HW_REG_FLAT_SCR_HI), s3
; FLAT_SCR_OPT-NEXT: s_load_dwordx2 s[2:3], s[0:1], 0x0
-; FLAT_SCR_OPT-NEXT: ; implicit-def: $vgpr0
+; FLAT_SCR_OPT-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; FLAT_SCR_OPT-NEXT: s_waitcnt lgkmcnt(0)
; FLAT_SCR_OPT-NEXT: v_writelane_b32 v0, s2, 0
; FLAT_SCR_OPT-NEXT: v_writelane_b32 v0, s3, 1
@@ -240,7 +240,7 @@ define amdgpu_kernel void @test(ptr addrspace(1) %out, i32 %in) {
; FLAT_SCR_ARCH-LABEL: test:
; FLAT_SCR_ARCH: ; %bb.0:
; FLAT_SCR_ARCH-NEXT: s_load_dwordx2 s[2:3], s[0:1], 0x0
-; FLAT_SCR_ARCH-NEXT: ; implicit-def: $vgpr0
+; FLAT_SCR_ARCH-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; FLAT_SCR_ARCH-NEXT: s_waitcnt lgkmcnt(0)
; FLAT_SCR_ARCH-NEXT: v_writelane_b32 v0, s2, 0
; FLAT_SCR_ARCH-NEXT: v_writelane_b32 v0, s3, 1
diff --git a/llvm/test/CodeGen/AMDGPU/kernel-vgpr-spill-mubuf-with-voffset.ll b/llvm/test/CodeGen/AMDGPU/kernel-vgpr-spill-mubuf-with-voffset.ll
index 8607535dd849cdc..03c85b4470628fa 100644
--- a/llvm/test/CodeGen/AMDGPU/kernel-vgpr-spill-mubuf-with-voffset.ll
+++ b/llvm/test/CodeGen/AMDGPU/kernel-vgpr-spill-mubuf-with-voffset.ll
@@ -13,7 +13,7 @@ define amdgpu_kernel void @test_kernel(i32 %val) #0 {
; CHECK-NEXT: s_addc_u32 flat_scratch_hi, s13, 0
; CHECK-NEXT: s_add_u32 s0, s0, s17
; CHECK-NEXT: s_addc_u32 s1, s1, 0
-; CHECK-NEXT: ; implicit-def: $vgpr3
+; CHECK-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; CHECK-NEXT: v_writelane_b32 v3, s16, 0
; CHECK-NEXT: s_or_saveexec_b64 s[34:35], -1
; CHECK-NEXT: s_add_i32 s12, s33, 0x100200
diff --git a/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands-non-ptr-intrinsics.ll b/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands-non-ptr-intrinsics.ll
index f660d8df8405228..c877740c1baa9f0 100644
--- a/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands-non-ptr-intrinsics.ll
+++ b/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands-non-ptr-intrinsics.ll
@@ -144,7 +144,7 @@ define float @mubuf_vgpr(<4 x i32> %i, i32 %c) #0 {
; W64-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:28 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:32 ; 4-byte Folded Spill
; W64-O0-NEXT: s_mov_b64 exec, s[4:5]
-; W64-O0-NEXT: ; implicit-def: $vgpr5
+; W64-O0-NEXT: ; implicit-def: $vgpr5 : SGPR spill to VGPR lane
; W64-O0-NEXT: buffer_store_dword v4, off, s[0:3], s32 offset:20 ; 4-byte Folded Spill
; W64-O0-NEXT: v_mov_b32_e32 v5, v3
; W64-O0-NEXT: v_mov_b32_e32 v6, v2
@@ -497,7 +497,7 @@ define void @mubuf_vgpr_adjacent_in_block(<4 x i32> %i, <4 x i32> %j, i32 %c, pt
; W64-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:76 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:80 ; 4-byte Folded Spill
; W64-O0-NEXT: s_mov_b64 exec, s[4:5]
-; W64-O0-NEXT: ; implicit-def: $vgpr13
+; W64-O0-NEXT: ; implicit-def: $vgpr13 : SGPR spill to VGPR lane
; W64-O0-NEXT: buffer_store_dword v11, off, s[0:3], s32 offset:56 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v9, off, s[0:3], s32 offset:52 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v8, off, s[0:3], s32 offset:64 ; 4-byte Folded Spill
@@ -1019,7 +1019,7 @@ define void @mubuf_vgpr_outside_entry(<4 x i32> %i, <4 x i32> %j, i32 %c, ptr ad
; W64-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:76 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:80 ; 4-byte Folded Spill
; W64-O0-NEXT: s_mov_b64 exec, s[4:5]
-; W64-O0-NEXT: ; implicit-def: $vgpr8
+; W64-O0-NEXT: ; implicit-def: $vgpr8 : SGPR spill to VGPR lane
; W64-O0-NEXT: buffer_store_dword v31, off, s[0:3], s32 offset:56 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v11, off, s[0:3], s32 offset:52 ; 4-byte Folded Spill
; W64-O0-NEXT: v_mov_b32_e32 v8, v6
diff --git a/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll b/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll
index 7df4f98ddebfa52..ac46f8ce20d60bf 100644
--- a/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll
+++ b/llvm/test/CodeGen/AMDGPU/mubuf-legalize-operands.ll
@@ -143,7 +143,7 @@ define float @mubuf_vgpr(ptr addrspace(8) %i, i32 %c) #0 {
; W64-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:32 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:36 ; 4-byte Folded Spill
; W64-O0-NEXT: s_mov_b64 exec, s[4:5]
-; W64-O0-NEXT: ; implicit-def: $vgpr5
+; W64-O0-NEXT: ; implicit-def: $vgpr5 : SGPR spill to VGPR lane
; W64-O0-NEXT: buffer_store_dword v4, off, s[0:3], s32 offset:24 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v3, off, s[0:3], s32 offset:20 ; 4-byte Folded Spill
; W64-O0-NEXT: v_mov_b32_e32 v6, v2
@@ -511,7 +511,7 @@ define void @mubuf_vgpr_adjacent_in_block(ptr addrspace(8) %i, ptr addrspace(8)
; W64-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:72 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:76 ; 4-byte Folded Spill
; W64-O0-NEXT: s_mov_b64 exec, s[4:5]
-; W64-O0-NEXT: ; implicit-def: $vgpr13
+; W64-O0-NEXT: ; implicit-def: $vgpr13 : SGPR spill to VGPR lane
; W64-O0-NEXT: buffer_store_dword v11, off, s[0:3], s32 offset:56 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v9, off, s[0:3], s32 offset:52 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v8, off, s[0:3], s32 offset:60 ; 4-byte Folded Spill
@@ -1058,7 +1058,7 @@ define void @mubuf_vgpr_outside_entry(ptr addrspace(8) %i, ptr addrspace(8) %j,
; W64-O0-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:100 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:104 ; 4-byte Folded Spill
; W64-O0-NEXT: s_mov_b64 exec, s[4:5]
-; W64-O0-NEXT: ; implicit-def: $vgpr8
+; W64-O0-NEXT: ; implicit-def: $vgpr8 : SGPR spill to VGPR lane
; W64-O0-NEXT: buffer_store_dword v31, off, s[0:3], s32 offset:64 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v11, off, s[0:3], s32 offset:48 ; 4-byte Folded Spill
; W64-O0-NEXT: buffer_store_dword v6, off, s[0:3], s32 offset:60 ; 4-byte Folded Spill
diff --git a/llvm/test/CodeGen/AMDGPU/need-fp-from-vgpr-spills.ll b/llvm/test/CodeGen/AMDGPU/need-fp-from-vgpr-spills.ll
index b04069e5003a27a..f4114a01e9b4863 100644
--- a/llvm/test/CodeGen/AMDGPU/need-fp-from-vgpr-spills.ll
+++ b/llvm/test/CodeGen/AMDGPU/need-fp-from-vgpr-spills.ll
@@ -71,7 +71,7 @@ define amdgpu_kernel void @kernel_call() {
; CHECK-NEXT: s_addc_u32 flat_scratch_hi, s13, 0
; CHECK-NEXT: s_add_u32 s0, s0, s17
; CHECK-NEXT: s_addc_u32 s1, s1, 0
-; CHECK-NEXT: ; implicit-def: $vgpr3
+; CHECK-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; CHECK-NEXT: v_writelane_b32 v3, s16, 0
; CHECK-NEXT: s_or_saveexec_b64 s[24:25], -1
; CHECK-NEXT: buffer_store_dword v3, off, s[0:3], 0 offset:4 ; 4-byte Folded Spill
@@ -139,7 +139,7 @@ define amdgpu_kernel void @kernel_tailcall() {
; CHECK-NEXT: s_addc_u32 flat_scratch_hi, s13, 0
; CHECK-NEXT: s_add_u32 s0, s0, s17
; CHECK-NEXT: s_addc_u32 s1, s1, 0
-; CHECK-NEXT: ; implicit-def: $vgpr3
+; CHECK-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; CHECK-NEXT: v_writelane_b32 v3, s16, 0
; CHECK-NEXT: s_or_saveexec_b64 s[24:25], -1
; CHECK-NEXT: buffer_store_dword v3, off, s[0:3], 0 offset:4 ; 4-byte Folded Spill
@@ -260,7 +260,7 @@ define protected amdgpu_kernel void @kernel() {
; CHECK-NEXT: s_addc_u32 flat_scratch_hi, s13, 0
; CHECK-NEXT: s_add_u32 s0, s0, s17
; CHECK-NEXT: s_addc_u32 s1, s1, 0
-; CHECK-NEXT: ; implicit-def: $vgpr3
+; CHECK-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; CHECK-NEXT: v_writelane_b32 v3, s16, 0
; CHECK-NEXT: s_or_saveexec_b64 s[24:25], -1
; CHECK-NEXT: buffer_store_dword v3, off, s[0:3], 0 offset:4 ; 4-byte Folded Spill
diff --git a/llvm/test/CodeGen/AMDGPU/partial-sgpr-to-vgpr-spills.ll b/llvm/test/CodeGen/AMDGPU/partial-sgpr-to-vgpr-spills.ll
index f223a447318112e..454dc881f7bf2cd 100644
--- a/llvm/test/CodeGen/AMDGPU/partial-sgpr-to-vgpr-spills.ll
+++ b/llvm/test/CodeGen/AMDGPU/partial-sgpr-to-vgpr-spills.ll
@@ -17,9 +17,9 @@ define amdgpu_kernel void @spill_sgprs_to_multiple_vgprs(ptr addrspace(1) %out,
; GCN-NEXT: s_mov_b32 s95, 0xe8f000
; GCN-NEXT: s_add_u32 s92, s92, s11
; GCN-NEXT: s_addc_u32 s93, s93, 0
-; GCN-NEXT: ; implicit-def: $vgpr0
-; GCN-NEXT: ; implicit-def: $vgpr1
-; GCN-NEXT: ; implicit-def: $vgpr2
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
+; GCN-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
+; GCN-NEXT: ; implicit-def: $vgpr2 : SGPR spill to VGPR lane
; GCN-NEXT: s_load_dword s0, s[4:5], 0xb
; GCN-NEXT: ;;#ASMSTART
; GCN-NEXT: ; def s[4:11]
@@ -488,8 +488,8 @@ define amdgpu_kernel void @split_sgpr_spill_2_vgprs(ptr addrspace(1) %out, i32 %
; GCN-NEXT: s_mov_b32 s55, 0xe8f000
; GCN-NEXT: s_add_u32 s52, s52, s11
; GCN-NEXT: s_addc_u32 s53, s53, 0
-; GCN-NEXT: ; implicit-def: $vgpr0
-; GCN-NEXT: ; implicit-def: $vgpr1
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
+; GCN-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; GCN-NEXT: s_load_dword s0, s[4:5], 0xb
; GCN-NEXT: ;;#ASMSTART
; GCN-NEXT: ; def s[4:19]
@@ -738,8 +738,8 @@ define amdgpu_kernel void @no_vgprs_last_sgpr_spill(ptr addrspace(1) %out, i32 %
; GCN-NEXT: s_mov_b32 s55, 0xe8f000
; GCN-NEXT: s_add_u32 s52, s52, s11
; GCN-NEXT: s_addc_u32 s53, s53, 0
-; GCN-NEXT: ; implicit-def: $vgpr0
-; GCN-NEXT: ; implicit-def: $vgpr0
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN-NEXT: s_load_dword s0, s[4:5], 0xb
; GCN-NEXT: ;;#ASMSTART
; GCN-NEXT: ;;#ASMEND
@@ -989,8 +989,8 @@ define amdgpu_kernel void @no_vgprs_last_sgpr_spill_live_v0(i32 %in) #1 {
; GCN-NEXT: s_mov_b32 s55, 0xe8f000
; GCN-NEXT: s_add_u32 s52, s52, s11
; GCN-NEXT: s_addc_u32 s53, s53, 0
-; GCN-NEXT: ; implicit-def: $vgpr0
-; GCN-NEXT: ; implicit-def: $vgpr0
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN-NEXT: s_load_dword s0, s[4:5], 0x9
; GCN-NEXT: ;;#ASMSTART
; GCN-NEXT: ;;#ASMEND
diff --git a/llvm/test/CodeGen/AMDGPU/scc-clobbered-sgpr-to-vmem-spill.ll b/llvm/test/CodeGen/AMDGPU/scc-clobbered-sgpr-to-vmem-spill.ll
index d19a9233e118bc3..5f291489848fe6e 100644
--- a/llvm/test/CodeGen/AMDGPU/scc-clobbered-sgpr-to-vmem-spill.ll
+++ b/llvm/test/CodeGen/AMDGPU/scc-clobbered-sgpr-to-vmem-spill.ll
@@ -8,7 +8,7 @@
define amdgpu_kernel void @kernel0(ptr addrspace(1) %out, i32 %in) #1 {
; CHECK-LABEL: kernel0:
; CHECK: ; %bb.0:
-; CHECK-NEXT: ; implicit-def: $vgpr23
+; CHECK-NEXT: ; implicit-def: $vgpr23 : SGPR spill to VGPR lane
; CHECK-NEXT: ;;#ASMSTART
; CHECK-NEXT: ;;#ASMEND
; CHECK-NEXT: ;;#ASMSTART
diff --git a/llvm/test/CodeGen/AMDGPU/sgpr-spill-no-vgprs.ll b/llvm/test/CodeGen/AMDGPU/sgpr-spill-no-vgprs.ll
index 90307f1c7905b94..fbbcfd62f5c602d 100644
--- a/llvm/test/CodeGen/AMDGPU/sgpr-spill-no-vgprs.ll
+++ b/llvm/test/CodeGen/AMDGPU/sgpr-spill-no-vgprs.ll
@@ -9,8 +9,8 @@ define amdgpu_kernel void @partial_no_vgprs_last_sgpr_spill(ptr addrspace(1) %ou
; GCN: ; %bb.0:
; GCN-NEXT: s_add_u32 s0, s0, s15
; GCN-NEXT: s_addc_u32 s1, s1, 0
-; GCN-NEXT: ; implicit-def: $vgpr0
-; GCN-NEXT: ; implicit-def: $vgpr0
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN-NEXT: s_load_dword s4, s[8:9], 0x2
; GCN-NEXT: ;;#ASMSTART
; GCN-NEXT: ;;#ASMEND
diff --git a/llvm/test/CodeGen/AMDGPU/sgpr-spill-update-only-slot-indexes.ll b/llvm/test/CodeGen/AMDGPU/sgpr-spill-update-only-slot-indexes.ll
index 813e702288bb19b..1f2c203459782e8 100644
--- a/llvm/test/CodeGen/AMDGPU/sgpr-spill-update-only-slot-indexes.ll
+++ b/llvm/test/CodeGen/AMDGPU/sgpr-spill-update-only-slot-indexes.ll
@@ -13,7 +13,7 @@ define amdgpu_kernel void @kernel() {
; GCN-NEXT: s_mov_b32 s37, SCRATCH_RSRC_DWORD1
; GCN-NEXT: s_mov_b32 s38, -1
; GCN-NEXT: s_mov_b32 s39, 0xe00000
-; GCN-NEXT: ; implicit-def: $vgpr3
+; GCN-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; GCN-NEXT: s_add_u32 s36, s36, s11
; GCN-NEXT: v_writelane_b32 v3, s4, 0
; GCN-NEXT: s_movk_i32 s32, 0x400
diff --git a/llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll b/llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll
index f4ae5877d1063de..16550fc9588aef0 100644
--- a/llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll
+++ b/llvm/test/CodeGen/AMDGPU/sgpr-spills-split-regalloc.ll
@@ -715,7 +715,7 @@ define void @spill_sgpr_with_sgpr_uses() #0 {
; GCN-NEXT: buffer_store_dword v251, off, s[0:3], s32 offset:8 ; 4-byte Folded Spill
; GCN-NEXT: buffer_store_dword v252, off, s[0:3], s32 offset:4 ; 4-byte Folded Spill
; GCN-NEXT: buffer_store_dword v253, off, s[0:3], s32 ; 4-byte Folded Spill
-; GCN-NEXT: ; implicit-def: $vgpr0
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN-NEXT: v_mov_b32_e32 v0, 0
; GCN-NEXT: buffer_store_dword v0, off, s[0:3], s32 offset:440
; GCN-NEXT: s_waitcnt vmcnt(0)
diff --git a/llvm/test/CodeGen/AMDGPU/spill-vgpr-to-agpr-update-regscavenger.ll b/llvm/test/CodeGen/AMDGPU/spill-vgpr-to-agpr-update-regscavenger.ll
index 4639f28d68061da..81dd2c4457b2fbd 100644
--- a/llvm/test/CodeGen/AMDGPU/spill-vgpr-to-agpr-update-regscavenger.ll
+++ b/llvm/test/CodeGen/AMDGPU/spill-vgpr-to-agpr-update-regscavenger.ll
@@ -13,7 +13,7 @@ define void @test() {
; CHECK-NEXT: s_xor_saveexec_b64 s[4:5], -1
; CHECK-NEXT: buffer_store_dword v0, off, s[0:3], s32 ; 4-byte Folded Spill
; CHECK-NEXT: s_mov_b64 exec, s[4:5]
-; CHECK-NEXT: ; implicit-def: $vgpr0
+; CHECK-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; CHECK-NEXT: .LBB0_1: ; %bb.1
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
; CHECK-NEXT: s_cbranch_scc1 .LBB0_3
diff --git a/llvm/test/CodeGen/AMDGPU/swdev380865.ll b/llvm/test/CodeGen/AMDGPU/swdev380865.ll
index 7f989e30118b9ac..7201ffaf561662a 100644
--- a/llvm/test/CodeGen/AMDGPU/swdev380865.ll
+++ b/llvm/test/CodeGen/AMDGPU/swdev380865.ll
@@ -16,7 +16,7 @@ define amdgpu_kernel void @_Z6kernelILi4000ELi1EEvPd(ptr addrspace(1) %x.coerce)
; CHECK: ; %bb.0: ; %entry
; CHECK-NEXT: s_mov_b64 s[0:1], 0
; CHECK-NEXT: s_load_dword s2, s[0:1], 0x0
-; CHECK-NEXT: ; implicit-def: $vgpr2
+; CHECK-NEXT: ; implicit-def: $vgpr2 : SGPR spill to VGPR lane
; CHECK-NEXT: ; kill: killed $sgpr0_sgpr1
; CHECK-NEXT: s_mov_b32 s7, 0x401c0000
; CHECK-NEXT: s_mov_b32 s5, 0x40280000
diff --git a/llvm/test/CodeGen/AMDGPU/vgpr-spill-placement-issue61083.ll b/llvm/test/CodeGen/AMDGPU/vgpr-spill-placement-issue61083.ll
index 2e1b86f69a521f7..c84eee4f9921d08 100644
--- a/llvm/test/CodeGen/AMDGPU/vgpr-spill-placement-issue61083.ll
+++ b/llvm/test/CodeGen/AMDGPU/vgpr-spill-placement-issue61083.ll
@@ -13,7 +13,7 @@ define amdgpu_kernel void @__omp_offloading_16_dd2df_main_l9() {
; CHECK: ; %bb.0: ; %bb
; CHECK-NEXT: s_add_u32 s0, s0, s15
; CHECK-NEXT: s_addc_u32 s1, s1, 0
-; CHECK-NEXT: ; implicit-def: $vgpr1
+; CHECK-NEXT: ; implicit-def: $vgpr1 : SGPR spill to VGPR lane
; CHECK-NEXT: v_mov_b32_e32 v2, v0
; CHECK-NEXT: s_or_saveexec_b64 s[8:9], -1
; CHECK-NEXT: buffer_load_dword v0, off, s[0:3], 0 offset:4 ; 4-byte Folded Reload
diff --git a/llvm/test/CodeGen/AMDGPU/vgpr_constant_to_sgpr.ll b/llvm/test/CodeGen/AMDGPU/vgpr_constant_to_sgpr.ll
index c2b86a5135022a4..1f286b766102c78 100644
--- a/llvm/test/CodeGen/AMDGPU/vgpr_constant_to_sgpr.ll
+++ b/llvm/test/CodeGen/AMDGPU/vgpr_constant_to_sgpr.ll
@@ -16,7 +16,7 @@ define protected amdgpu_kernel void @kern(ptr %addr) !llvm.amdgcn.lds.kernel.id
; CHECK-NEXT: s_setreg_b32 hwreg(HW_REG_FLAT_SCR_HI), s13
; CHECK-NEXT: s_add_u32 s0, s0, s17
; CHECK-NEXT: s_addc_u32 s1, s1, 0
-; CHECK-NEXT: ; implicit-def: $vgpr3
+; CHECK-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; CHECK-NEXT: v_writelane_b32 v3, s16, 0
; CHECK-NEXT: s_or_saveexec_b32 s33, -1
; CHECK-NEXT: buffer_store_dword v3, off, s[0:3], 0 offset:4 ; 4-byte Folded Spill
diff --git a/llvm/test/CodeGen/AMDGPU/whole-wave-register-copy.ll b/llvm/test/CodeGen/AMDGPU/whole-wave-register-copy.ll
index cb4e2e2bf5a4728..cfb1cffdb509648 100644
--- a/llvm/test/CodeGen/AMDGPU/whole-wave-register-copy.ll
+++ b/llvm/test/CodeGen/AMDGPU/whole-wave-register-copy.ll
@@ -19,7 +19,7 @@ define void @vector_reg_liverange_split() #0 {
; GFX90A-NEXT: buffer_store_dword a32, off, s[0:3], s33 offset:4 ; 4-byte Folded Spill
; GFX90A-NEXT: s_mov_b64 exec, s[18:19]
; GFX90A-NEXT: v_writelane_b32 v40, s16, 2
-; GFX90A-NEXT: ; implicit-def: $vgpr0
+; GFX90A-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GFX90A-NEXT: v_writelane_b32 v40, s30, 0
; GFX90A-NEXT: s_addk_i32 s32, 0x400
; GFX90A-NEXT: v_writelane_b32 v40, s31, 1
diff --git a/llvm/test/CodeGen/AMDGPU/whole-wave-register-spill.ll b/llvm/test/CodeGen/AMDGPU/whole-wave-register-spill.ll
index f92ab5740fac1b7..7eabe982ff2bcde 100644
--- a/llvm/test/CodeGen/AMDGPU/whole-wave-register-spill.ll
+++ b/llvm/test/CodeGen/AMDGPU/whole-wave-register-spill.ll
@@ -27,7 +27,7 @@ define void @test() #0 {
; GCN-NEXT: v_writelane_b32 v40, s28, 2
; GCN-NEXT: v_writelane_b32 v40, s29, 3
; GCN-NEXT: v_writelane_b32 v40, s16, 4
-; GCN-NEXT: ; implicit-def: $vgpr0
+; GCN-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN-NEXT: v_writelane_b32 v40, s30, 0
; GCN-NEXT: s_addk_i32 s32, 0x800
; GCN-NEXT: v_writelane_b32 v40, s31, 1
@@ -83,7 +83,7 @@ define void @test() #0 {
; GCN-O0-NEXT: v_writelane_b32 v40, s29, 3
; GCN-O0-NEXT: v_writelane_b32 v40, s16, 4
; GCN-O0-NEXT: s_add_i32 s32, s32, 0x400
-; GCN-O0-NEXT: ; implicit-def: $vgpr0
+; GCN-O0-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GCN-O0-NEXT: v_writelane_b32 v40, s30, 0
; GCN-O0-NEXT: v_writelane_b32 v40, s31, 1
; GCN-O0-NEXT: ;;#ASMSTART
diff --git a/llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll b/llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll
index 7ce326359181b93..b6e7da97e008905 100644
--- a/llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll
+++ b/llvm/test/CodeGen/AMDGPU/wwm-reserved-spill.ll
@@ -145,7 +145,7 @@ define amdgpu_gfx void @strict_wwm_cfg(ptr addrspace(8) inreg %tmp14, i32 %arg)
; GFX9-O0-NEXT: buffer_store_dword v1, off, s[0:3], s32 offset:24 ; 4-byte Folded Spill
; GFX9-O0-NEXT: buffer_store_dword v2, off, s[0:3], s32 offset:28 ; 4-byte Folded Spill
; GFX9-O0-NEXT: s_mov_b64 exec, s[34:35]
-; GFX9-O0-NEXT: ; implicit-def: $vgpr3
+; GFX9-O0-NEXT: ; implicit-def: $vgpr3 : SGPR spill to VGPR lane
; GFX9-O0-NEXT: v_mov_b32_e32 v3, v0
; GFX9-O0-NEXT: s_or_saveexec_b64 s[46:47], -1
; GFX9-O0-NEXT: buffer_load_dword v0, off, s[0:3], s32 ; 4-byte Folded Reload
@@ -580,7 +580,7 @@ define amdgpu_gfx void @strict_wwm_call_i64(ptr addrspace(8) inreg %tmp14, i64 i
; GFX9-O0-NEXT: buffer_store_dword v5, off, s[0:3], s33 offset:52 ; 4-byte Folded Spill
; GFX9-O0-NEXT: s_mov_b64 exec, s[34:35]
; GFX9-O0-NEXT: s_add_i32 s32, s32, 0x1000
-; GFX9-O0-NEXT: ; implicit-def: $vgpr0
+; GFX9-O0-NEXT: ; implicit-def: $vgpr0 : SGPR spill to VGPR lane
; GFX9-O0-NEXT: v_writelane_b32 v10, s30, 0
; GFX9-O0-NEXT: v_writelane_b32 v10, s31, 1
; GFX9-O0-NEXT: s_mov_b32 s34, s8
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