[llvm] d383ade - [BranchRelaxation] Fall through only if block has no unconditional branches
Anshil Gandhi via llvm-commits
llvm-commits at lists.llvm.org
Thu Oct 13 21:49:02 PDT 2022
Author: Anshil Gandhi
Date: 2022-10-13T22:48:41-06:00
New Revision: d383adec4d3914492e67267462e6f00fdd4934af
URL: https://github.com/llvm/llvm-project/commit/d383adec4d3914492e67267462e6f00fdd4934af
DIFF: https://github.com/llvm/llvm-project/commit/d383adec4d3914492e67267462e6f00fdd4934af.diff
LOG: [BranchRelaxation] Fall through only if block has no unconditional branches
Prior to inserting an unconditional branch from X to its
fall through basic block, check if X has any terminators to
avoid inserting additional branches.
Reviewed By: arsenm
Differential Revision: https://reviews.llvm.org/D134557
Added:
llvm/test/CodeGen/AMDGPU/branch-relax-no-terminators.mir
Modified:
llvm/lib/CodeGen/BranchRelaxation.cpp
Removed:
################################################################################
diff --git a/llvm/lib/CodeGen/BranchRelaxation.cpp b/llvm/lib/CodeGen/BranchRelaxation.cpp
index 29508f8f35a67..87d5d053318fc 100644
--- a/llvm/lib/CodeGen/BranchRelaxation.cpp
+++ b/llvm/lib/CodeGen/BranchRelaxation.cpp
@@ -23,6 +23,7 @@
#include "llvm/Pass.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
@@ -431,7 +432,8 @@ bool BranchRelaxation::fixupConditionalBranch(MachineInstr &MI) {
bool BranchRelaxation::fixupUnconditionalBranch(MachineInstr &MI) {
MachineBasicBlock *MBB = MI.getParent();
-
+ MachineBasicBlock *TBB = nullptr, *FBB = nullptr;
+ SmallVector<MachineOperand, 4> Cond;
unsigned OldBrSize = TII->getInstSizeInBytes(MI);
MachineBasicBlock *DestBB = TII->getBranchDestBlock(MI);
@@ -444,6 +446,20 @@ bool BranchRelaxation::fixupUnconditionalBranch(MachineInstr &MI) {
MachineBasicBlock *BranchBB = MBB;
+ auto RemoveBranch = [&](MachineBasicBlock *MBB) {
+ unsigned &BBSize = BlockInfo[MBB->getNumber()].Size;
+ int RemovedSize = 0;
+ TII->removeBranch(*MBB, &RemovedSize);
+ BBSize -= RemovedSize;
+ };
+
+ auto InsertUncondBranch = [&](MachineBasicBlock *MBB,
+ MachineBasicBlock *Dst) {
+ TII->insertUnconditionalBranch(*MBB, Dst, DebugLoc());
+ // Recalculate the block size.
+ BlockInfo[MBB->getNumber()].Size = computeBlockSize(*MBB);
+ };
+
// If this was an expanded conditional branch, there is already a single
// unconditional branch in a block.
if (!MBB->empty()) {
@@ -482,11 +498,15 @@ bool BranchRelaxation::fixupUnconditionalBranch(MachineInstr &MI) {
// restore blocks are just duplicated for each far branch.
assert(!DestBB->isEntryBlock());
MachineBasicBlock *PrevBB = &*std::prev(DestBB->getIterator());
- if (auto *FT = PrevBB->getFallThrough()) {
- assert(FT == DestBB);
- TII->insertUnconditionalBranch(*PrevBB, FT, DebugLoc());
- // Recalculate the block size.
- BlockInfo[PrevBB->getNumber()].Size = computeBlockSize(*PrevBB);
+ // Fall through only if PrevBB has no unconditional branch as one of its
+ // terminators.
+ if (TII->analyzeBranch(*PrevBB, TBB, FBB, Cond))
+ report_fatal_error("Could not analyze terminators.");
+ if (!FBB) {
+ if (!Cond.empty() && TBB && TBB == DestBB)
+ RemoveBranch(PrevBB);
+ if (!TBB || (TBB && !Cond.empty()))
+ InsertUncondBranch(PrevBB, DestBB);
}
// Now, RestoreBB could be placed directly before DestBB.
MF->splice(DestBB->getIterator(), RestoreBB->getIterator());
diff --git a/llvm/test/CodeGen/AMDGPU/branch-relax-no-terminators.mir b/llvm/test/CodeGen/AMDGPU/branch-relax-no-terminators.mir
new file mode 100644
index 0000000000000..a61d446304da1
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/branch-relax-no-terminators.mir
@@ -0,0 +1,163 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a --amdgpu-s-branch-bits=5 -run-pass branch-relaxation %s -o - | FileCheck %s
+
+---
+name: branch_no_terminators
+alignment: 1
+tracksRegLiveness: true
+liveins:
+ - { reg: '$sgpr12' }
+body: |
+ ; CHECK-LABEL: name: branch_no_terminators
+ ; CHECK: bb.0.entry:
+ ; CHECK-NEXT: successors: %bb.1(0x50000000), %bb.5(0x30000000)
+ ; CHECK-NEXT: liveins: $sgpr12, $sgpr30, $sgpr31, $sgpr33, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: S_WAITCNT 0
+ ; CHECK-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+ ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec
+ ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 4, 0, 0, 0, implicit $exec
+ ; CHECK-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
+ ; CHECK-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr30, 0, $vgpr0
+ ; CHECK-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr31, 1, $vgpr0
+ ; CHECK-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr33, 2, $vgpr0
+ ; CHECK-NEXT: $sgpr81 = S_MOV_B32 killed $sgpr12
+ ; CHECK-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr94, 63, $vgpr0
+ ; CHECK-NEXT: $vgpr1 = V_WRITELANE_B32 killed $sgpr101, 6, $vgpr1
+ ; CHECK-NEXT: S_CMP_EQ_U32 killed renamable $sgpr81, 0, implicit-def $scc
+ ; CHECK-NEXT: S_CBRANCH_SCC0 %bb.1, implicit killed $scc
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.5.entry:
+ ; CHECK-NEXT: successors: %bb.6(0x80000000)
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr32, $sgpr33, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $exec = S_NOT_B64 $exec, implicit-def dead $scc, implicit-def $vgpr2
+ ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $private_rsrc_reg, $sp_reg, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
+ ; CHECK-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr0, 0, undef $vgpr2, implicit $sgpr0_sgpr1
+ ; CHECK-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr1, 1, $vgpr2, implicit $sgpr0_sgpr1
+ ; CHECK-NEXT: $sgpr0_sgpr1 = S_GETPC_B64 post-instr-symbol <mcsymbol >
+ ; CHECK-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, target-flags(<unknown target flag>) <mcsymbol >, implicit-def $scc
+ ; CHECK-NEXT: $sgpr1 = S_ADDC_U32 $sgpr1, target-flags(<unknown target flag>) <mcsymbol >, implicit-def $scc, implicit $scc
+ ; CHECK-NEXT: S_SETPC_B64 $sgpr0_sgpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: successors: %bb.2(0x80000000)
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $vgpr1 = V_WRITELANE_B32 killed $sgpr81, 7, $vgpr1
+ ; CHECK-NEXT: $sgpr81 = S_MOV_B32 killed $sgpr82
+ ; CHECK-NEXT: $sgpr82 = S_MOV_B32 killed $sgpr83
+ ; CHECK-NEXT: $sgpr83 = S_MOV_B32 killed $sgpr84
+ ; CHECK-NEXT: $sgpr84 = S_MOV_B32 killed $sgpr85
+ ; CHECK-NEXT: $sgpr101 = S_MOV_B32 killed $vcc_lo
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.2:
+ ; CHECK-NEXT: successors: %bb.3(0x04000000), %bb.7(0x7c000000)
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: INLINEASM &"v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64", 1 /* sideeffect attdialect */, 2097162 /* regdef:SReg_32 */, def renamable $sgpr4
+ ; CHECK-NEXT: S_CMP_LG_U32 killed renamable $sgpr4, 0, implicit-def $scc
+ ; CHECK-NEXT: S_CBRANCH_SCC0 %bb.3, implicit killed $scc
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.7:
+ ; CHECK-NEXT: successors: %bb.2(0x80000000)
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $sgpr0_sgpr1 = S_GETPC_B64 post-instr-symbol <mcsymbol >
+ ; CHECK-NEXT: $sgpr0 = S_ADD_U32 $sgpr0, target-flags(<unknown target flag>) <mcsymbol >, implicit-def $scc
+ ; CHECK-NEXT: $sgpr1 = S_ADDC_U32 $sgpr1, target-flags(<unknown target flag>) <mcsymbol >, implicit-def $scc, implicit $scc
+ ; CHECK-NEXT: S_SETPC_B64 $sgpr0_sgpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.3:
+ ; CHECK-NEXT: successors: %bb.4(0x80000000)
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $sgpr4 = S_MOV_B32 killed $sgpr5
+ ; CHECK-NEXT: $sgpr5 = S_MOV_B32 killed $sgpr6
+ ; CHECK-NEXT: $sgpr6 = S_MOV_B32 killed $sgpr7
+ ; CHECK-NEXT: $sgpr7 = S_MOV_B32 killed $sgpr8
+ ; CHECK-NEXT: $sgpr8 = S_MOV_B32 killed $sgpr9
+ ; CHECK-NEXT: $sgpr9 = S_MOV_B32 killed $sgpr10
+ ; CHECK-NEXT: $sgpr10 = S_MOV_B32 killed $sgpr11
+ ; CHECK-NEXT: S_BRANCH %bb.4
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.6:
+ ; CHECK-NEXT: successors: %bb.4(0x80000000)
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1, $vgpr2, $sgpr32, $sgpr33, $sgpr2_sgpr3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $sgpr0 = V_READLANE_B32 $vgpr2, 0, implicit-def $sgpr0_sgpr1
+ ; CHECK-NEXT: $sgpr1 = V_READLANE_B32 killed $vgpr2, 1
+ ; CHECK-NEXT: $vgpr2 = BUFFER_LOAD_DWORD_OFFSET $private_rsrc_reg, $sp_reg, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
+ ; CHECK-NEXT: $exec = S_NOT_B64 $exec, implicit-def dead $scc, implicit killed $vgpr2
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.4:
+ ; CHECK-NEXT: liveins: $vcc_hi, $vcc_lo, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1, $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr32, $sgpr33, $sgpr0_sgpr1_sgpr2_sgpr3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $sgpr101 = V_READLANE_B32 $vgpr1, 6
+ ; CHECK-NEXT: $sgpr100 = V_READLANE_B32 $vgpr1, 5
+ ; CHECK-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+ ; CHECK-NEXT: $vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec
+ ; CHECK-NEXT: $vgpr1 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 4, 0, 0, 0, implicit $exec
+ ; CHECK-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
+ ; CHECK-NEXT: S_WAITCNT 3952
+ ; CHECK-NEXT: S_SETPC_B64_return undef $sgpr30_sgpr31
+ bb.0.entry:
+ successors: %bb.1(0x50000000), %bb.4(0x30000000)
+ liveins: $sgpr12, $sgpr30, $sgpr31, $sgpr33, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32
+
+ S_WAITCNT 0
+ $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+ BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec
+ BUFFER_STORE_DWORD_OFFSET $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 4, 0, 0, 0, implicit $exec
+ $exec = S_MOV_B64 killed $sgpr4_sgpr5
+ $vgpr0 = V_WRITELANE_B32 killed $sgpr30, 0, $vgpr0
+ $vgpr0 = V_WRITELANE_B32 killed $sgpr31, 1, $vgpr0
+ $vgpr0 = V_WRITELANE_B32 $sgpr33, 2, $vgpr0
+ $sgpr81 = S_MOV_B32 killed $sgpr12
+ $vgpr0 = V_WRITELANE_B32 killed $sgpr94, 63, $vgpr0
+ $vgpr1 = V_WRITELANE_B32 killed $sgpr101, 6, $vgpr1
+ S_CMP_EQ_U32 killed renamable $sgpr81, 0, implicit-def $scc
+ S_CBRANCH_SCC1 %bb.4, implicit killed $scc
+
+ bb.1:
+ liveins: $vcc_hi, $vcc_lo, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+
+ $vgpr1 = V_WRITELANE_B32 killed $sgpr81, 7, $vgpr1
+ $sgpr81 = S_MOV_B32 killed $sgpr82
+ $sgpr82 = S_MOV_B32 killed $sgpr83
+ $sgpr83 = S_MOV_B32 killed $sgpr84
+ $sgpr84 = S_MOV_B32 killed $sgpr85
+ $sgpr101 = S_MOV_B32 killed $vcc_lo
+
+ bb.2:
+ successors: %bb.3(0x04000000), %bb.2(0x7c000000)
+ liveins: $vcc_hi, $vcc_lo, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+
+ INLINEASM &"v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64\0A v_nop_e64", 1 /* sideeffect attdialect */, 2097162 /* regdef:SReg_32 */, def renamable $sgpr4
+ S_CMP_LG_U32 killed renamable $sgpr4, 0, implicit-def $scc
+ S_CBRANCH_SCC1 %bb.2, implicit killed $scc
+
+ bb.3:
+ liveins: $vcc_hi, $vcc_lo, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1
+
+ $sgpr4 = S_MOV_B32 killed $sgpr5
+ $sgpr5 = S_MOV_B32 killed $sgpr6
+ $sgpr6 = S_MOV_B32 killed $sgpr7
+ $sgpr7 = S_MOV_B32 killed $sgpr8
+ $sgpr8 = S_MOV_B32 killed $sgpr9
+ $sgpr9 = S_MOV_B32 killed $sgpr10
+ $sgpr10 = S_MOV_B32 killed $sgpr11
+
+ bb.4:
+ liveins: $vcc_hi, $vcc_lo, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $sgpr8, $sgpr9, $sgpr10, $sgpr11, $sgpr12, $sgpr13, $sgpr14, $sgpr15, $sgpr16, $sgpr17, $sgpr18, $sgpr19, $sgpr20, $sgpr21, $sgpr22, $sgpr23, $sgpr24, $sgpr25, $sgpr26, $sgpr27, $sgpr28, $sgpr29, $sgpr30, $sgpr31, $sgpr34, $sgpr35, $sgpr36, $sgpr37, $sgpr38, $sgpr39, $sgpr40, $sgpr41, $sgpr42, $sgpr43, $sgpr44, $sgpr45, $sgpr46, $sgpr47, $sgpr48, $sgpr49, $sgpr50, $sgpr51, $sgpr52, $sgpr53, $sgpr54, $sgpr55, $sgpr56, $sgpr57, $sgpr58, $sgpr59, $sgpr60, $sgpr61, $sgpr62, $sgpr63, $sgpr64, $sgpr65, $sgpr66, $sgpr67, $sgpr68, $sgpr69, $sgpr70, $sgpr71, $sgpr72, $sgpr73, $sgpr74, $sgpr75, $sgpr76, $sgpr77, $sgpr78, $sgpr79, $sgpr80, $sgpr81, $sgpr82, $sgpr83, $sgpr84, $sgpr85, $sgpr86, $sgpr87, $sgpr88, $sgpr89, $sgpr90, $sgpr91, $sgpr92, $sgpr93, $sgpr94, $sgpr95, $sgpr96, $sgpr97, $sgpr98, $sgpr99, $sgpr100, $sgpr101, $vgpr0, $vgpr1, $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr32, $sgpr33, $sgpr0_sgpr1_sgpr2_sgpr3
+
+ $sgpr101 = V_READLANE_B32 $vgpr1, 6
+ $sgpr100 = V_READLANE_B32 $vgpr1, 5
+ $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+ $vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec
+ $vgpr1 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 4, 0, 0, 0, implicit $exec
+ $exec = S_MOV_B64 killed $sgpr4_sgpr5
+ S_WAITCNT 3952
+ S_SETPC_B64_return undef $sgpr30_sgpr31
+
+...
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