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Revert "r223440 - Consider subregs when calling MI::registerDefIsDead for phys deps"
Reverting this because, while it fixes the problem in the reduced test case, it does not fix the problem in the full test case from the bug report. llvm-svn: 223442
This commit is contained in:
Hal Finkel
parent
c4a8e3d745
commit
bf9e347b44
@ -310,15 +310,9 @@ void ScheduleDAGInstrs::addPhysRegDeps(SUnit *SU, unsigned OperIdx) {
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SUnit *DefSU = I->SU;
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if (DefSU == &ExitSU)
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continue;
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auto IsDefDead = [this](SUnit *DefSU, unsigned Reg) {
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for (MCSubRegIterator SR(Reg, TRI, true); SR.isValid(); ++SR)
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if (!DefSU->getInstr()->registerDefIsDead(*SR))
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return false;
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return true;
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};
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if (DefSU != SU &&
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(Kind != SDep::Output || !MO.isDead() ||
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!IsDefDead(DefSU, *Alias))) {
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!DefSU->getInstr()->registerDefIsDead(*Alias))) {
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if (Kind == SDep::Anti)
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DefSU->addPred(SDep(SU, Kind, /*Reg=*/*Alias));
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else {
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@ -1,168 +0,0 @@
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; RUN: llc -mcpu=pwr7 < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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; Function Attrs: nounwind
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define void @jbd2_journal_commit_transaction(i32* %journal) #0 {
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entry:
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br i1 undef, label %do.body, label %if.then5
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if.then5: ; preds = %entry
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unreachable
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do.body: ; preds = %entry
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br i1 undef, label %do.body.i, label %trace_jbd2_start_commit.exit
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do.body.i: ; preds = %do.body
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unreachable
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trace_jbd2_start_commit.exit: ; preds = %do.body
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br i1 undef, label %do.body.i1116, label %trace_jbd2_commit_locking.exit
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do.body.i1116: ; preds = %trace_jbd2_start_commit.exit
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br i1 undef, label %if.end.i1123, label %do.body5.i1122
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do.body5.i1122: ; preds = %do.body.i1116
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unreachable
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if.end.i1123: ; preds = %do.body.i1116
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br label %trace_jbd2_commit_locking.exit
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trace_jbd2_commit_locking.exit: ; preds = %if.end.i1123, %trace_jbd2_start_commit.exit
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br i1 undef, label %spin_unlock.exit1146, label %if.then.i.i.i.i1144
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if.then.i.i.i.i1144: ; preds = %trace_jbd2_commit_locking.exit
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unreachable
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spin_unlock.exit1146: ; preds = %trace_jbd2_commit_locking.exit
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br i1 undef, label %spin_unlock.exit1154, label %if.then.i.i.i.i1152
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if.then.i.i.i.i1152: ; preds = %spin_unlock.exit1146
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br label %spin_unlock.exit1154
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spin_unlock.exit1154: ; preds = %if.then.i.i.i.i1152, %spin_unlock.exit1146
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br i1 undef, label %do.body.i1159, label %trace_jbd2_commit_flushing.exit
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do.body.i1159: ; preds = %spin_unlock.exit1154
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unreachable
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trace_jbd2_commit_flushing.exit: ; preds = %spin_unlock.exit1154
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br i1 undef, label %for.end.i, label %for.body.lr.ph.i
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for.body.lr.ph.i: ; preds = %trace_jbd2_commit_flushing.exit
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br i1 undef, label %spin_unlock.exit.i, label %if.then.i.i.i.i.i
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if.then.i.i.i.i.i: ; preds = %for.body.lr.ph.i
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unreachable
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spin_unlock.exit.i: ; preds = %for.body.lr.ph.i
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unreachable
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for.end.i: ; preds = %trace_jbd2_commit_flushing.exit
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br i1 undef, label %journal_submit_data_buffers.exit, label %if.then.i.i.i.i31.i
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if.then.i.i.i.i31.i: ; preds = %for.end.i
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unreachable
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journal_submit_data_buffers.exit: ; preds = %for.end.i
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br i1 undef, label %if.end103, label %if.then102
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if.then102: ; preds = %journal_submit_data_buffers.exit
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unreachable
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if.end103: ; preds = %journal_submit_data_buffers.exit
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br i1 undef, label %do.body.i1182, label %trace_jbd2_commit_logging.exit
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do.body.i1182: ; preds = %if.end103
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unreachable
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trace_jbd2_commit_logging.exit: ; preds = %if.end103
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br i1 undef, label %for.end.i1287, label %for.body.i1277
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for.body.i1277: ; preds = %trace_jbd2_commit_logging.exit
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unreachable
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for.end.i1287: ; preds = %trace_jbd2_commit_logging.exit
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br i1 undef, label %journal_finish_inode_data_buffers.exit, label %if.then.i.i.i.i84.i
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if.then.i.i.i.i84.i: ; preds = %for.end.i1287
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unreachable
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journal_finish_inode_data_buffers.exit: ; preds = %for.end.i1287
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br i1 undef, label %if.end256, label %if.then249
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if.then249: ; preds = %journal_finish_inode_data_buffers.exit
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unreachable
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if.end256: ; preds = %journal_finish_inode_data_buffers.exit
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br i1 undef, label %do.body277, label %if.then260
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if.then260: ; preds = %if.end256
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br label %do.body277
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do.body277: ; preds = %if.then260, %if.end256
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br label %while.body318
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while.body318: ; preds = %wait_on_buffer.exit, %do.body277
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%tobool.i1295 = icmp eq i64 undef, 0
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br i1 %tobool.i1295, label %wait_on_buffer.exit, label %if.then.i1296
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if.then.i1296: ; preds = %while.body318
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unreachable
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wait_on_buffer.exit: ; preds = %while.body318
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br i1 undef, label %do.body378, label %while.body318
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do.body378: ; preds = %wait_on_buffer.exit
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br i1 undef, label %while.end418, label %while.body392.lr.ph
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while.body392.lr.ph: ; preds = %do.body378
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br label %while.body392
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while.body392: ; preds = %wait_on_buffer.exit1319, %while.body392.lr.ph
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%0 = load i8** undef, align 8
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%add.ptr399 = getelementptr inbounds i8* %0, i64 -72
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%b_state.i.i1314 = bitcast i8* %add.ptr399 to i64*
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%tobool.i1316 = icmp eq i64 undef, 0
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br i1 %tobool.i1316, label %wait_on_buffer.exit1319, label %if.then.i1317
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if.then.i1317: ; preds = %while.body392
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unreachable
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wait_on_buffer.exit1319: ; preds = %while.body392
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%1 = load volatile i64* %b_state.i.i1314, align 8
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%conv.i.i1322 = and i64 %1, 1
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%lnot404 = icmp eq i64 %conv.i.i1322, 0
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%.err.4 = select i1 %lnot404, i32 -5, i32 undef
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%2 = call i64 asm sideeffect "1:.long 0x7c0000a8 $| ((($0) & 0x1f) << 21) $| (((0) & 0x1f) << 16) $| ((($3) & 0x1f) << 11) $| (((0) & 0x1) << 0) \0Aandc $0,$0,$2\0Astdcx. $0,0,$3\0Abne- 1b\0A", "=&r,=*m,r,r,*m,~{cc},~{memory}"(i64* %b_state.i.i1314, i64 262144, i64* %b_state.i.i1314, i64* %b_state.i.i1314) #1
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%prev.i.i.i1325 = getelementptr inbounds i8* %0, i64 8
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%3 = load i32** null, align 8
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store i32* %3, i32** undef, align 8
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call void @__brelse(i32* undef) #1
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br i1 undef, label %while.end418, label %while.body392
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; CHECK-LABEL: @jbd2_journal_commit_transaction
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; CHECK-NOT: andi.
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; CHECK: stdcx.
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; CHECK: andi.
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; CHECK: isel
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while.end418: ; preds = %wait_on_buffer.exit1319, %do.body378
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%err.4.lcssa = phi i32 [ undef, %do.body378 ], [ %.err.4, %wait_on_buffer.exit1319 ]
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br i1 undef, label %if.end421, label %if.then420
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if.then420: ; preds = %while.end418
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call void @jbd2_journal_abort(i32* %journal, i32 signext %err.4.lcssa) #1
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br label %if.end421
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if.end421: ; preds = %if.then420, %while.end418
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unreachable
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}
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declare void @jbd2_journal_abort(i32*, i32 signext)
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declare void @__brelse(i32*)
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attributes #0 = { nounwind }
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attributes #1 = { nounwind }
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