[PATCH] D141289: [MIScheduler] Print top/down cycle in the SUnit dump.

[Francesco Petrogalli via Phabricator via llvm-commits]

fpetrogalli updated this revision to Diff 488636.
fpetrogalli added a comment.

I have specified -mcpu in the test and the resulting values printed in the SUnit dump.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D141289/new/

https://reviews.llvm.org/D141289

Files:
  llvm/lib/CodeGen/ScheduleDAG.cpp
  llvm/test/CodeGen/AArch64/sched-print-cycle.mir


Index: llvm/test/CodeGen/AArch64/sched-print-cycle.mir
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/AArch64/sched-print-cycle.mir
@@ -0,0 +1,23 @@
+# RUN: llc -mcpu=apple-m1 -sched-print-cycles=true \
+# RUN: -run-pass=machine-scheduler -debug-only=machine-scheduler -o - %s 2>&1 | FileCheck %s
+
+# RUN: llc -mcpu=apple-m1 -sched-print-cycles=false \
+# RUN: -run-pass=machine-scheduler -debug-only=machine-scheduler -o - %s 2>&1 | FileCheck %s --check-prefix=NOCYCLES
+
+# REQUIRES: asserts
+---
+name: mul_mul
+tracksRegLiveness: true
+body:             |
+  bb.0:
+    liveins: $x0
+    $x1 = ADDXrr $x0, $x0
+    $x2 = ADDXrr $x1, $x1
+
+# CHECK-LABEL: *** Final schedule for %bb.0 ***
+# CHECK: SU(0 0 0):   $x1 = ADDXrr $x0, $x0
+# CHECK: SU(1 0 0):   $x2 = ADDXrr $x1, $x1
+
+# NOCYCLES-LABEL: *** Final schedule for %bb.0 ***
+# NOCYCLES: SU(0):   $x1 = ADDXrr $x0, $x0
+# NOCYCLES: SU(1):   $x2 = ADDXrr $x1, $x1
Index: llvm/lib/CodeGen/ScheduleDAG.cpp
===================================================================
--- llvm/lib/CodeGen/ScheduleDAG.cpp
+++ llvm/lib/CodeGen/ScheduleDAG.cpp
@@ -46,6 +46,10 @@
 static cl::opt<bool> StressSchedOpt(
   "stress-sched", cl::Hidden, cl::init(false),
   cl::desc("Stress test instruction scheduling"));
+
+static cl::opt<bool> SchedPrintCycles(
+  "sched-print-cycles", cl::Hidden, cl::init(false),
+  cl::desc("Report top/bottom cycles when dumping SUnit instances"));
 #endif
 
 void SchedulingPriorityQueue::anchor() {}
@@ -356,8 +360,12 @@
     dbgs() << "EntrySU";
   else if (&SU == &ExitSU)
     dbgs() << "ExitSU";
-  else
-    dbgs() << "SU(" << SU.NodeNum << ")";
+  else {
+    dbgs() << "SU(" << SU.NodeNum;
+    if (SchedPrintCycles)
+      dbgs() << " " << SU.TopReadyCycle << " " << SU.BotReadyCycle;
+    dbgs()<< ")";
+  }
 }
 
 LLVM_DUMP_METHOD void ScheduleDAG::dumpNodeAll(const SUnit &SU) const {


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D141289.488636.patch
Type: text/x-patch
Size: 1936 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20230112/98d101a5/attachment.bin>