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Revert "[CodeGen] Really renumber slot indexes before register allocation (#67038)"
This reverts commit 2501ae5. Reverted due to various buildbot failures.
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736 files changed

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‎llvm/lib/CodeGen/SlotIndexes.cpp

Lines changed: 2 additions & 32 deletions
Original file line numberDiff line numberDiff line change
@@ -238,38 +238,8 @@ void SlotIndexes::repairIndexesInRange(MachineBasicBlock *MBB,
238238
}
239239

240240
void SlotIndexes::packIndexes() {
241-
unsigned Index = 0;
242-
// Check that the dummy entry for the start of the first block does not need
243-
// updating. It should always be 0.
244-
assert(idx2MBBMap[0].second->getNumber() == 0 &&
245-
"First MBB should be number 0!");
246-
assert(MBBRanges[0].first.getIndex() == Index && "First index should be 0!");
247-
Index += SlotIndex::InstrDist;
248-
// Iterate over basic blocks in slot index order.
249-
for (MachineBasicBlock *MBB : make_second_range(idx2MBBMap)) {
250-
auto [MBBStartIdx, MBBEndIdx] = MBBRanges[MBB->getNumber()];
251-
auto Start = MBBStartIdx.listEntry()->getIterator();
252-
auto End = MBBEndIdx.listEntry()->getIterator();
253-
// Update entries for each instruction in the block.
254-
for (auto &I : make_early_inc_range(make_range(std::next(Start), End))) {
255-
if (I.getInstr()) {
256-
I.setIndex(Index);
257-
Index += SlotIndex::InstrDist;
258-
} else {
259-
// Remove entries for deleted instructions.
260-
// FIXME: Eventually we want to remove them in
261-
// removeMachineInstrFromMaps but that is not currently possible because
262-
// some SlotIndexes API functions are called in a transiently broken
263-
// state where some live ranges still refer to indexes of deleted
264-
// instructions.
265-
// TODO: Add removed entries to a free list so they can be reused?
266-
indexList.remove(I);
267-
}
268-
}
269-
// Update the dummy entry for the end of the block.
270-
End->setIndex(Index);
271-
Index += SlotIndex::InstrDist;
272-
}
241+
for (auto [Index, Entry] : enumerate(indexList))
242+
Entry.setIndex(Index * SlotIndex::InstrDist);
273243
}
274244

275245
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)

‎llvm/test/CodeGen/AArch64/Atomics/aarch64-atomic-load-outline_atomics.ll

Lines changed: 16 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -236,8 +236,8 @@ define dso_local i128 @load_atomic_i128_aligned_unordered(ptr %ptr) {
236236
; -O0: stxp w8, x0, x1, [x9]
237237
;
238238
; -O1-LABEL: load_atomic_i128_aligned_unordered:
239-
; -O1: ldxp x8, x1, [x0]
240-
; -O1: stxp w9, x8, x1, [x0]
239+
; -O1: ldxp x0, x1, [x8]
240+
; -O1: stxp w9, x0, x1, [x8]
241241
%r = load atomic i128, ptr %ptr unordered, align 16
242242
ret i128 %r
243243
}
@@ -251,8 +251,8 @@ define dso_local i128 @load_atomic_i128_aligned_unordered_const(ptr readonly %pt
251251
; -O0: stxp w8, x0, x1, [x9]
252252
;
253253
; -O1-LABEL: load_atomic_i128_aligned_unordered_const:
254-
; -O1: ldxp x8, x1, [x0]
255-
; -O1: stxp w9, x8, x1, [x0]
254+
; -O1: ldxp x0, x1, [x8]
255+
; -O1: stxp w9, x0, x1, [x8]
256256
%r = load atomic i128, ptr %ptr unordered, align 16
257257
ret i128 %r
258258
}
@@ -266,8 +266,8 @@ define dso_local i128 @load_atomic_i128_aligned_monotonic(ptr %ptr) {
266266
; -O0: stxp w8, x0, x1, [x9]
267267
;
268268
; -O1-LABEL: load_atomic_i128_aligned_monotonic:
269-
; -O1: ldxp x8, x1, [x0]
270-
; -O1: stxp w9, x8, x1, [x0]
269+
; -O1: ldxp x0, x1, [x8]
270+
; -O1: stxp w9, x0, x1, [x8]
271271
%r = load atomic i128, ptr %ptr monotonic, align 16
272272
ret i128 %r
273273
}
@@ -281,8 +281,8 @@ define dso_local i128 @load_atomic_i128_aligned_monotonic_const(ptr readonly %pt
281281
; -O0: stxp w8, x0, x1, [x9]
282282
;
283283
; -O1-LABEL: load_atomic_i128_aligned_monotonic_const:
284-
; -O1: ldxp x8, x1, [x0]
285-
; -O1: stxp w9, x8, x1, [x0]
284+
; -O1: ldxp x0, x1, [x8]
285+
; -O1: stxp w9, x0, x1, [x8]
286286
%r = load atomic i128, ptr %ptr monotonic, align 16
287287
ret i128 %r
288288
}
@@ -296,8 +296,8 @@ define dso_local i128 @load_atomic_i128_aligned_acquire(ptr %ptr) {
296296
; -O0: stxp w8, x0, x1, [x9]
297297
;
298298
; -O1-LABEL: load_atomic_i128_aligned_acquire:
299-
; -O1: ldaxp x8, x1, [x0]
300-
; -O1: stxp w9, x8, x1, [x0]
299+
; -O1: ldaxp x0, x1, [x8]
300+
; -O1: stxp w9, x0, x1, [x8]
301301
%r = load atomic i128, ptr %ptr acquire, align 16
302302
ret i128 %r
303303
}
@@ -311,8 +311,8 @@ define dso_local i128 @load_atomic_i128_aligned_acquire_const(ptr readonly %ptr)
311311
; -O0: stxp w8, x0, x1, [x9]
312312
;
313313
; -O1-LABEL: load_atomic_i128_aligned_acquire_const:
314-
; -O1: ldaxp x8, x1, [x0]
315-
; -O1: stxp w9, x8, x1, [x0]
314+
; -O1: ldaxp x0, x1, [x8]
315+
; -O1: stxp w9, x0, x1, [x8]
316316
%r = load atomic i128, ptr %ptr acquire, align 16
317317
ret i128 %r
318318
}
@@ -326,8 +326,8 @@ define dso_local i128 @load_atomic_i128_aligned_seq_cst(ptr %ptr) {
326326
; -O0: stlxp w8, x0, x1, [x9]
327327
;
328328
; -O1-LABEL: load_atomic_i128_aligned_seq_cst:
329-
; -O1: ldaxp x8, x1, [x0]
330-
; -O1: stlxp w9, x8, x1, [x0]
329+
; -O1: ldaxp x0, x1, [x8]
330+
; -O1: stlxp w9, x0, x1, [x8]
331331
%r = load atomic i128, ptr %ptr seq_cst, align 16
332332
ret i128 %r
333333
}
@@ -341,8 +341,8 @@ define dso_local i128 @load_atomic_i128_aligned_seq_cst_const(ptr readonly %ptr)
341341
; -O0: stlxp w8, x0, x1, [x9]
342342
;
343343
; -O1-LABEL: load_atomic_i128_aligned_seq_cst_const:
344-
; -O1: ldaxp x8, x1, [x0]
345-
; -O1: stlxp w9, x8, x1, [x0]
344+
; -O1: ldaxp x0, x1, [x8]
345+
; -O1: stlxp w9, x0, x1, [x8]
346346
%r = load atomic i128, ptr %ptr seq_cst, align 16
347347
ret i128 %r
348348
}

‎llvm/test/CodeGen/AArch64/Atomics/aarch64-atomic-load-rcpc.ll

Lines changed: 16 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -236,8 +236,8 @@ define dso_local i128 @load_atomic_i128_aligned_unordered(ptr %ptr) {
236236
; -O0: stxp w8, x0, x1, [x9]
237237
;
238238
; -O1-LABEL: load_atomic_i128_aligned_unordered:
239-
; -O1: ldxp x8, x1, [x0]
240-
; -O1: stxp w9, x8, x1, [x0]
239+
; -O1: ldxp x0, x1, [x8]
240+
; -O1: stxp w9, x0, x1, [x8]
241241
%r = load atomic i128, ptr %ptr unordered, align 16
242242
ret i128 %r
243243
}
@@ -251,8 +251,8 @@ define dso_local i128 @load_atomic_i128_aligned_unordered_const(ptr readonly %pt
251251
; -O0: stxp w8, x0, x1, [x9]
252252
;
253253
; -O1-LABEL: load_atomic_i128_aligned_unordered_const:
254-
; -O1: ldxp x8, x1, [x0]
255-
; -O1: stxp w9, x8, x1, [x0]
254+
; -O1: ldxp x0, x1, [x8]
255+
; -O1: stxp w9, x0, x1, [x8]
256256
%r = load atomic i128, ptr %ptr unordered, align 16
257257
ret i128 %r
258258
}
@@ -266,8 +266,8 @@ define dso_local i128 @load_atomic_i128_aligned_monotonic(ptr %ptr) {
266266
; -O0: stxp w8, x0, x1, [x9]
267267
;
268268
; -O1-LABEL: load_atomic_i128_aligned_monotonic:
269-
; -O1: ldxp x8, x1, [x0]
270-
; -O1: stxp w9, x8, x1, [x0]
269+
; -O1: ldxp x0, x1, [x8]
270+
; -O1: stxp w9, x0, x1, [x8]
271271
%r = load atomic i128, ptr %ptr monotonic, align 16
272272
ret i128 %r
273273
}
@@ -281,8 +281,8 @@ define dso_local i128 @load_atomic_i128_aligned_monotonic_const(ptr readonly %pt
281281
; -O0: stxp w8, x0, x1, [x9]
282282
;
283283
; -O1-LABEL: load_atomic_i128_aligned_monotonic_const:
284-
; -O1: ldxp x8, x1, [x0]
285-
; -O1: stxp w9, x8, x1, [x0]
284+
; -O1: ldxp x0, x1, [x8]
285+
; -O1: stxp w9, x0, x1, [x8]
286286
%r = load atomic i128, ptr %ptr monotonic, align 16
287287
ret i128 %r
288288
}
@@ -296,8 +296,8 @@ define dso_local i128 @load_atomic_i128_aligned_acquire(ptr %ptr) {
296296
; -O0: stxp w8, x0, x1, [x9]
297297
;
298298
; -O1-LABEL: load_atomic_i128_aligned_acquire:
299-
; -O1: ldaxp x8, x1, [x0]
300-
; -O1: stxp w9, x8, x1, [x0]
299+
; -O1: ldaxp x0, x1, [x8]
300+
; -O1: stxp w9, x0, x1, [x8]
301301
%r = load atomic i128, ptr %ptr acquire, align 16
302302
ret i128 %r
303303
}
@@ -311,8 +311,8 @@ define dso_local i128 @load_atomic_i128_aligned_acquire_const(ptr readonly %ptr)
311311
; -O0: stxp w8, x0, x1, [x9]
312312
;
313313
; -O1-LABEL: load_atomic_i128_aligned_acquire_const:
314-
; -O1: ldaxp x8, x1, [x0]
315-
; -O1: stxp w9, x8, x1, [x0]
314+
; -O1: ldaxp x0, x1, [x8]
315+
; -O1: stxp w9, x0, x1, [x8]
316316
%r = load atomic i128, ptr %ptr acquire, align 16
317317
ret i128 %r
318318
}
@@ -326,8 +326,8 @@ define dso_local i128 @load_atomic_i128_aligned_seq_cst(ptr %ptr) {
326326
; -O0: stlxp w8, x0, x1, [x9]
327327
;
328328
; -O1-LABEL: load_atomic_i128_aligned_seq_cst:
329-
; -O1: ldaxp x8, x1, [x0]
330-
; -O1: stlxp w9, x8, x1, [x0]
329+
; -O1: ldaxp x0, x1, [x8]
330+
; -O1: stlxp w9, x0, x1, [x8]
331331
%r = load atomic i128, ptr %ptr seq_cst, align 16
332332
ret i128 %r
333333
}
@@ -341,8 +341,8 @@ define dso_local i128 @load_atomic_i128_aligned_seq_cst_const(ptr readonly %ptr)
341341
; -O0: stlxp w8, x0, x1, [x9]
342342
;
343343
; -O1-LABEL: load_atomic_i128_aligned_seq_cst_const:
344-
; -O1: ldaxp x8, x1, [x0]
345-
; -O1: stlxp w9, x8, x1, [x0]
344+
; -O1: ldaxp x0, x1, [x8]
345+
; -O1: stlxp w9, x0, x1, [x8]
346346
%r = load atomic i128, ptr %ptr seq_cst, align 16
347347
ret i128 %r
348348
}

‎llvm/test/CodeGen/AArch64/Atomics/aarch64-atomic-load-v8a.ll

Lines changed: 16 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -236,8 +236,8 @@ define dso_local i128 @load_atomic_i128_aligned_unordered(ptr %ptr) {
236236
; -O0: stxp w8, x0, x1, [x9]
237237
;
238238
; -O1-LABEL: load_atomic_i128_aligned_unordered:
239-
; -O1: ldxp x8, x1, [x0]
240-
; -O1: stxp w9, x8, x1, [x0]
239+
; -O1: ldxp x0, x1, [x8]
240+
; -O1: stxp w9, x0, x1, [x8]
241241
%r = load atomic i128, ptr %ptr unordered, align 16
242242
ret i128 %r
243243
}
@@ -251,8 +251,8 @@ define dso_local i128 @load_atomic_i128_aligned_unordered_const(ptr readonly %pt
251251
; -O0: stxp w8, x0, x1, [x9]
252252
;
253253
; -O1-LABEL: load_atomic_i128_aligned_unordered_const:
254-
; -O1: ldxp x8, x1, [x0]
255-
; -O1: stxp w9, x8, x1, [x0]
254+
; -O1: ldxp x0, x1, [x8]
255+
; -O1: stxp w9, x0, x1, [x8]
256256
%r = load atomic i128, ptr %ptr unordered, align 16
257257
ret i128 %r
258258
}
@@ -266,8 +266,8 @@ define dso_local i128 @load_atomic_i128_aligned_monotonic(ptr %ptr) {
266266
; -O0: stxp w8, x0, x1, [x9]
267267
;
268268
; -O1-LABEL: load_atomic_i128_aligned_monotonic:
269-
; -O1: ldxp x8, x1, [x0]
270-
; -O1: stxp w9, x8, x1, [x0]
269+
; -O1: ldxp x0, x1, [x8]
270+
; -O1: stxp w9, x0, x1, [x8]
271271
%r = load atomic i128, ptr %ptr monotonic, align 16
272272
ret i128 %r
273273
}
@@ -281,8 +281,8 @@ define dso_local i128 @load_atomic_i128_aligned_monotonic_const(ptr readonly %pt
281281
; -O0: stxp w8, x0, x1, [x9]
282282
;
283283
; -O1-LABEL: load_atomic_i128_aligned_monotonic_const:
284-
; -O1: ldxp x8, x1, [x0]
285-
; -O1: stxp w9, x8, x1, [x0]
284+
; -O1: ldxp x0, x1, [x8]
285+
; -O1: stxp w9, x0, x1, [x8]
286286
%r = load atomic i128, ptr %ptr monotonic, align 16
287287
ret i128 %r
288288
}
@@ -296,8 +296,8 @@ define dso_local i128 @load_atomic_i128_aligned_acquire(ptr %ptr) {
296296
; -O0: stxp w8, x0, x1, [x9]
297297
;
298298
; -O1-LABEL: load_atomic_i128_aligned_acquire:
299-
; -O1: ldaxp x8, x1, [x0]
300-
; -O1: stxp w9, x8, x1, [x0]
299+
; -O1: ldaxp x0, x1, [x8]
300+
; -O1: stxp w9, x0, x1, [x8]
301301
%r = load atomic i128, ptr %ptr acquire, align 16
302302
ret i128 %r
303303
}
@@ -311,8 +311,8 @@ define dso_local i128 @load_atomic_i128_aligned_acquire_const(ptr readonly %ptr)
311311
; -O0: stxp w8, x0, x1, [x9]
312312
;
313313
; -O1-LABEL: load_atomic_i128_aligned_acquire_const:
314-
; -O1: ldaxp x8, x1, [x0]
315-
; -O1: stxp w9, x8, x1, [x0]
314+
; -O1: ldaxp x0, x1, [x8]
315+
; -O1: stxp w9, x0, x1, [x8]
316316
%r = load atomic i128, ptr %ptr acquire, align 16
317317
ret i128 %r
318318
}
@@ -326,8 +326,8 @@ define dso_local i128 @load_atomic_i128_aligned_seq_cst(ptr %ptr) {
326326
; -O0: stlxp w8, x0, x1, [x9]
327327
;
328328
; -O1-LABEL: load_atomic_i128_aligned_seq_cst:
329-
; -O1: ldaxp x8, x1, [x0]
330-
; -O1: stlxp w9, x8, x1, [x0]
329+
; -O1: ldaxp x0, x1, [x8]
330+
; -O1: stlxp w9, x0, x1, [x8]
331331
%r = load atomic i128, ptr %ptr seq_cst, align 16
332332
ret i128 %r
333333
}
@@ -341,8 +341,8 @@ define dso_local i128 @load_atomic_i128_aligned_seq_cst_const(ptr readonly %ptr)
341341
; -O0: stlxp w8, x0, x1, [x9]
342342
;
343343
; -O1-LABEL: load_atomic_i128_aligned_seq_cst_const:
344-
; -O1: ldaxp x8, x1, [x0]
345-
; -O1: stlxp w9, x8, x1, [x0]
344+
; -O1: ldaxp x0, x1, [x8]
345+
; -O1: stlxp w9, x0, x1, [x8]
346346
%r = load atomic i128, ptr %ptr seq_cst, align 16
347347
ret i128 %r
348348
}

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