[llvm] [SlotIndexes] Further pack indices to improve spill placement time (PR #182640)
via llvm-commits
llvm-commits at lists.llvm.org
Fri Feb 20 17:21:36 PST 2026
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-powerpc
Author: Aiden Grossman (boomanaiden154)
<details>
<summary>Changes</summary>
This patch makes it so that renumbering indices when inserting instructions into the SlotIndexes analysis renumbers the entire list if the list is otherwise densely packed. This fixes a case we saw on AArch64 with a lot of spills where every single spill instruction insertion required a renumbering of most of the instructions in a large function, making the operation approximately quadratic.
This is not NFC as heuristics depend on the SlotIndex numbers, although this should mostly be a wash as LRs should be extended ~equally.
---
Patch is 20.54 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/182640.diff
5 Files Affected:
- (modified) llvm/lib/CodeGen/SlotIndexes.cpp (+7)
- (modified) llvm/test/CodeGen/AMDGPU/remat-sop.mir (+6-6)
- (modified) llvm/test/CodeGen/PowerPC/rematerializable-instruction-machine-licm.ll (+111-111)
- (modified) llvm/test/CodeGen/X86/statepoint-live-in.ll (+2-2)
- (modified) llvm/test/CodeGen/X86/statepoint-regs.ll (+2-2)
``````````diff
diff --git a/llvm/lib/CodeGen/SlotIndexes.cpp b/llvm/lib/CodeGen/SlotIndexes.cpp
index 62e7f86a846ac..88bb1d3cd1113 100644
--- a/llvm/lib/CodeGen/SlotIndexes.cpp
+++ b/llvm/lib/CodeGen/SlotIndexes.cpp
@@ -182,6 +182,13 @@ void SlotIndexes::renumberIndexes(IndexList::iterator curItr) {
LLVM_DEBUG(dbgs() << "\n*** Renumbered SlotIndexes " << startItr->getIndex()
<< '-' << index << " ***\n");
+
+ // If we repack all the way to the end, add spacing in between the
+ // instructions so that future renumberings are able to catch up
+ // without also renumbering all the way to the end.
+ if (index == getLastIndex().getIndex())
+ packIndexes();
+
++NumLocalRenum;
}
diff --git a/llvm/test/CodeGen/AMDGPU/remat-sop.mir b/llvm/test/CodeGen/AMDGPU/remat-sop.mir
index cb652db425421..a1754e4cf3917 100644
--- a/llvm/test/CodeGen/AMDGPU/remat-sop.mir
+++ b/llvm/test/CodeGen/AMDGPU/remat-sop.mir
@@ -615,9 +615,9 @@ body: |
; GCN-NEXT: renamable $sgpr1 = COPY killed renamable $sgpr3
; GCN-NEXT: SI_SPILL_S32_SAVE killed renamable $sgpr1, %stack.2, implicit $exec, implicit $sp_reg :: (store (s32) into %stack.2, addrspace 5)
; GCN-NEXT: renamable $sgpr0_sgpr1 = S_GETPC_B64_pseudo
- ; GCN-NEXT: SI_SPILL_S32_SAVE killed renamable $sgpr0, %stack.5, implicit $exec, implicit $sp_reg :: (store (s32) into %stack.5, addrspace 5)
- ; GCN-NEXT: renamable $sgpr0 = COPY killed renamable $sgpr1
; GCN-NEXT: SI_SPILL_S32_SAVE killed renamable $sgpr0, %stack.4, implicit $exec, implicit $sp_reg :: (store (s32) into %stack.4, addrspace 5)
+ ; GCN-NEXT: renamable $sgpr0 = COPY killed renamable $sgpr1
+ ; GCN-NEXT: SI_SPILL_S32_SAVE killed renamable $sgpr0, %stack.5, implicit $exec, implicit $sp_reg :: (store (s32) into %stack.5, addrspace 5)
; GCN-NEXT: renamable $sgpr0 = SI_SPILL_S32_RESTORE %stack.1, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.1, addrspace 5)
; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.3, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.3, addrspace 5)
; GCN-NEXT: dead renamable $sgpr0 = S_ADD_U32 killed renamable $sgpr1, killed renamable $sgpr0, implicit-def $scc
@@ -625,16 +625,16 @@ body: |
; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.2, addrspace 5)
; GCN-NEXT: dead renamable $sgpr0 = S_ADDC_U32 killed renamable $sgpr0, killed renamable $sgpr1, implicit-def $scc, implicit $scc
; GCN-NEXT: renamable $sgpr0 = SI_SPILL_S32_RESTORE %stack.3, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.3, addrspace 5)
- ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.5, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.5, addrspace 5)
+ ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.4, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.4, addrspace 5)
; GCN-NEXT: dead renamable $sgpr0 = S_ADD_U32 killed renamable $sgpr0, killed renamable $sgpr1, implicit-def $scc
; GCN-NEXT: renamable $sgpr0 = SI_SPILL_S32_RESTORE %stack.0, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.0, addrspace 5)
- ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.4, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.4, addrspace 5)
+ ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.5, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.5, addrspace 5)
; GCN-NEXT: dead renamable $sgpr0 = S_ADDC_U32 killed renamable $sgpr0, killed renamable $sgpr1, implicit-def $scc, implicit $scc
; GCN-NEXT: renamable $sgpr0 = SI_SPILL_S32_RESTORE %stack.1, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.1, addrspace 5)
- ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.5, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.5, addrspace 5)
+ ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.4, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.4, addrspace 5)
; GCN-NEXT: dead renamable $sgpr0 = S_ADD_U32 killed renamable $sgpr0, killed renamable $sgpr1, implicit-def $scc
; GCN-NEXT: renamable $sgpr0 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.2, addrspace 5)
- ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.4, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.4, addrspace 5)
+ ; GCN-NEXT: renamable $sgpr1 = SI_SPILL_S32_RESTORE %stack.5, implicit $exec, implicit $sp_reg :: (load (s32) from %stack.5, addrspace 5)
; GCN-NEXT: dead renamable $sgpr0 = S_ADDC_U32 killed renamable $sgpr0, killed renamable $sgpr1, implicit-def $scc, implicit $scc
; GCN-NEXT: S_ENDPGM 0
%0:sreg_64 = S_GETPC_B64_pseudo
diff --git a/llvm/test/CodeGen/PowerPC/rematerializable-instruction-machine-licm.ll b/llvm/test/CodeGen/PowerPC/rematerializable-instruction-machine-licm.ll
index 33356e922fbae..869f60c93c826 100644
--- a/llvm/test/CodeGen/PowerPC/rematerializable-instruction-machine-licm.ll
+++ b/llvm/test/CodeGen/PowerPC/rematerializable-instruction-machine-licm.ll
@@ -159,138 +159,138 @@ define zeroext i32 @test1(i64 %0, ptr %1) {
; CHECK-NEXT: std 4, 488(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 488
; CHECK-NEXT: ori 4, 4, 18432
-; CHECK-NEXT: std 4, 480(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 248(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 537
+; CHECK-NEXT: ld 22, 248(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 7168
-; CHECK-NEXT: std 4, 472(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 240(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 36
+; CHECK-NEXT: ld 21, 240(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 40704
-; CHECK-NEXT: std 4, 464(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 232(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 85
+; CHECK-NEXT: ld 20, 232(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 29440
-; CHECK-NEXT: std 4, 456(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 480(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 134
; CHECK-NEXT: ori 4, 4, 18176
; CHECK-NEXT: std 4, 448(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 183
; CHECK-NEXT: ori 4, 4, 6912
-; CHECK-NEXT: std 4, 440(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 432(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 231
; CHECK-NEXT: ori 4, 4, 61184
-; CHECK-NEXT: std 4, 432(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 416(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 280
; CHECK-NEXT: ori 4, 4, 49920
-; CHECK-NEXT: std 4, 424(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 400(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 329
; CHECK-NEXT: ori 4, 4, 38656
-; CHECK-NEXT: std 4, 416(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 216(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 378
; CHECK-NEXT: ori 4, 4, 27392
-; CHECK-NEXT: std 4, 408(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 200(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 427
; CHECK-NEXT: ori 4, 4, 16128
-; CHECK-NEXT: std 4, 400(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 184(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 476
+; CHECK-NEXT: ld 30, 184(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 4864
-; CHECK-NEXT: std 4, 248(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 168(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 524
+; CHECK-NEXT: ld 29, 168(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 59136
-; CHECK-NEXT: std 4, 240(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 152(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 573
+; CHECK-NEXT: ld 28, 152(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 47872
-; CHECK-NEXT: std 4, 232(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 136(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 24
+; CHECK-NEXT: ld 27, 136(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 27136
-; CHECK-NEXT: std 4, 224(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 120(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 73
+; CHECK-NEXT: ld 26, 120(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 15872
-; CHECK-NEXT: std 4, 216(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 104(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 122
+; CHECK-NEXT: ld 25, 104(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 4608
-; CHECK-NEXT: std 4, 208(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 88(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 170
+; CHECK-NEXT: ld 24, 88(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 58880
-; CHECK-NEXT: std 4, 200(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 80(1) # 8-byte Folded Spill
; CHECK-NEXT: lis 4, 219
+; CHECK-NEXT: ld 2, 80(1) # 8-byte Folded Reload
; CHECK-NEXT: ori 4, 4, 47616
-; CHECK-NEXT: std 4, 192(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 72(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 36352
; CHECK-NEXT: lis 5, 317
-; CHECK-NEXT: ld 30, 192(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 184(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 64(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 25088
; CHECK-NEXT: lis 5, 366
-; CHECK-NEXT: ld 29, 184(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 176(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 23, 64(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 56(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 13824
; CHECK-NEXT: lis 5, 415
-; CHECK-NEXT: ld 28, 176(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 168(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 48(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 2560
; CHECK-NEXT: lis 5, 463
-; CHECK-NEXT: ld 27, 168(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 160(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 40(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 56832
; CHECK-NEXT: lis 5, 512
-; CHECK-NEXT: ld 26, 160(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 152(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 472(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 45568
; CHECK-NEXT: lis 5, 561
-; CHECK-NEXT: ld 25, 152(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 144(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 464(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 34304
; CHECK-NEXT: lis 5, 12
-; CHECK-NEXT: ld 24, 144(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 136(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 456(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 13568
; CHECK-NEXT: lis 5, 61
-; CHECK-NEXT: ld 23, 136(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 128(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 440(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 2304
; CHECK-NEXT: lis 5, 109
-; CHECK-NEXT: std 4, 120(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 424(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 56576
; CHECK-NEXT: lis 5, 158
-; CHECK-NEXT: ld 0, 120(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 112(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 408(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 45312
; CHECK-NEXT: lis 5, 207
-; CHECK-NEXT: ld 22, 112(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 104(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 224(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 34048
; CHECK-NEXT: lis 5, 256
-; CHECK-NEXT: ld 21, 104(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 96(1) # 8-byte Folded Spill
+; CHECK-NEXT: std 4, 208(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 5, 22784
-; CHECK-NEXT: ld 5, 248(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 20, 96(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 88(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 5, 72(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 192(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 6, 11520
-; CHECK-NEXT: ld 6, 240(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 19, 88(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 80(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 6, 48(1) # 8-byte Folded Reload
+; CHECK-NEXT: ld 19, 192(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 176(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 7, 256
-; CHECK-NEXT: ld 7, 232(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 18, 80(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 72(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 7, 40(1) # 8-byte Folded Reload
+; CHECK-NEXT: ld 18, 176(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 160(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 8, 54528
; CHECK-NEXT: ld 8, 224(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 17, 72(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 64(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 17, 160(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 144(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 9, 43264
; CHECK-NEXT: ld 9, 216(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 16, 64(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 56(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 16, 144(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 128(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 10, 32000
; CHECK-NEXT: ld 10, 208(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 15, 56(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 48(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 15, 128(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 112(1) # 8-byte Folded Spill
; CHECK-NEXT: ori 4, 11, 20736
; CHECK-NEXT: ld 11, 200(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 14, 48(1) # 8-byte Folded Reload
-; CHECK-NEXT: std 4, 40(1) # 8-byte Folded Spill
+; CHECK-NEXT: ld 14, 112(1) # 8-byte Folded Reload
+; CHECK-NEXT: std 4, 96(1) # 8-byte Folded Spill
; CHECK-NEXT: li 4, 0
-; CHECK-NEXT: ld 31, 40(1) # 8-byte Folded Reload
+; CHECK-NEXT: ld 31, 96(1) # 8-byte Folded Reload
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: .LBB0_1: # =>This Loop Header: Depth=1
; CHECK-NEXT: # Child Loop BB0_2 Depth 2
@@ -298,19 +298,17 @@ define zeroext i32 @test1(i64 %0, ptr %1) {
; CHECK-NEXT: li 4, 83
; CHECK-NEXT: mtctr 4
; CHECK-NEXT: ld 12, 256(1) # 8-byte Folded Reload
-; CHECK-NEXT: ld 4, 128(1) # 8-byte Folded Reload
+; CHECK-NEXT: ld 4, 56(1) # 8-byte Folded Reload
; CHECK-NEXT: .p2align 5
; CHECK-NEXT: .LBB0_2: # Parent Loop BB0_1 Depth=1
; CHECK-NEXT: # => This Inner Loop Header: Depth=2
-; CHECK-NEXT: ld 2, 560(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdux 3, 12, 2
-; CHECK-NEXT: ld 2, 552(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 5
-; CHECK-NEXT: stdx 3, 12, 6
-; CHECK-NEXT: stdx 3, 12, 7
-; CHECK-NEXT: stdx 3, 12, 8
+; CHECK-NEXT: ld 0, 560(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdux 3, 12, 0
+; CHECK-NEXT: ld 0, 552(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 22
+; CHECK-NEXT: stdx 3, 12, 21
+; CHECK-NEXT: stdx 3, 12, 20
; CHECK-NEXT: stdx 3, 12, 9
-; CHECK-NEXT: stdx 3, 12, 10
; CHECK-NEXT: stdx 3, 12, 11
; CHECK-NEXT: stdx 3, 12, 30
; CHECK-NEXT: stdx 3, 12, 29
@@ -319,12 +317,14 @@ define zeroext i32 @test1(i64 %0, ptr %1) {
; CHECK-NEXT: stdx 3, 12, 26
; CHECK-NEXT: stdx 3, 12, 25
; CHECK-NEXT: stdx 3, 12, 24
+; CHECK-NEXT: stdx 3, 12, 2
+; CHECK-NEXT: stdx 3, 12, 5
; CHECK-NEXT: stdx 3, 12, 23
; CHECK-NEXT: stdx 3, 12, 4
-; CHECK-NEXT: stdx 3, 12, 0
-; CHECK-NEXT: stdx 3, 12, 22
-; CHECK-NEXT: stdx 3, 12, 21
-; CHECK-NEXT: stdx 3, 12, 20
+; CHECK-NEXT: stdx 3, 12, 6
+; CHECK-NEXT: stdx 3, 12, 7
+; CHECK-NEXT: stdx 3, 12, 8
+; CHECK-NEXT: stdx 3, 12, 10
; CHECK-NEXT: stdx 3, 12, 19
; CHECK-NEXT: stdx 3, 12, 18
; CHECK-NEXT: stdx 3, 12, 17
@@ -332,45 +332,45 @@ define zeroext i32 @test1(i64 %0, ptr %1) {
; CHECK-NEXT: stdx 3, 12, 15
; CHECK-NEXT: stdx 3, 12, 14
; CHECK-NEXT: stdx 3, 12, 31
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 544(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 536(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 528(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 520(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 512(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 504(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 496(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 488(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 480(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 472(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 464(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 456(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 448(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 440(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 432(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 424(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 416(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 408(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
-; CHECK-NEXT: ld 2, 400(1) # 8-byte Folded Reload
-; CHECK-NEXT: stdx 3, 12, 2
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 544(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 536(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 528(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 520(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 512(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 504(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 496(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 488(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 480(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 448(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 432(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 416(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 400(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 472(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 464(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 456(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 440(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 424(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
+; CHECK-NEXT: ld 0, 408(1) # 8-byte Folded Reload
+; CHECK-NEXT: stdx 3, 12, 0
; CHECK-NEXT: bdnz .LBB0_2
; CHECK-NEXT: # %bb.3:
; CHECK-NEXT: ld 12, 384(1) # 8-byte Folded Reload
diff --git a/llvm/test/CodeGen/X86/statepoint-live-in.ll b/llvm/test/CodeGen/X86/statepoint-live-in.ll
index 787a33aa49b20..9cf647f8100cd 100644
--- a/llvm/test/CodeGen/X86/statepoint-live-in.ll
+++ b/llvm/test/CodeGen/X86/statepoint-live-in.ll
@@ -372,8 +372,8 @@ define void @test10(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32
; CHECK-NEXT: .cfi_offset %r14, -32
; CHECK-NEXT: .cfi_offset %r15, -24
; CHECK-NEXT: .cfi_offset %rbp, -16
-; CHECK-NEXT: movl %r9d, %ebp
-; CHECK-NEXT: movl %r8d, %ebx
+; CHECK-NEXT: movl %r9d, %ebx
+; CHECK-NEXT: movl %r8d, %ebp
; CHECK-NEXT: movl %ecx, %r14d
; CHECK-NEXT: movl %edx, %r15d
; CHECK-NEXT: movl %esi, %r12d
diff --git a/llvm/test/CodeGen/X86/statepoint-regs.ll b/llvm/test/CodeGen/X86/statepoint-regs.ll
index 5c26e29dce45e..cbbdae1616fe8 10064...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/182640
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