derek.holloway
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51 lines
1.6 KiB
YAML
51 lines
1.6 KiB
YAML
# RUN: llc -mtriple=hexagon -run-pass pipeliner %s -o /dev/null
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# Check that edges that violate topological order are not added to the
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# SwingSchedulerDAG. This is a case where the crash was caused by PR 145878.
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--- |
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target triple = "hexagon"
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define void @crash_145878() {
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entry:
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br label %loop
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loop: ; preds = %loop, %entry
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%lsr.iv2 = phi i32 [ %lsr.iv.next, %loop ], [ 1, %entry ]
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%lsr.iv = phi ptr [ %cgep3, %loop ], [ inttoptr (i32 -8 to ptr), %entry ]
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%cgep = getelementptr i8, ptr %lsr.iv, i32 12
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%load = load i32, ptr %cgep, align 4
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store i32 %load, ptr %lsr.iv, align 4
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%lsr.iv.next = add nsw i32 %lsr.iv2, -1
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%iv.cmp.not = icmp eq i32 %lsr.iv.next, 0
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%cgep3 = getelementptr i8, ptr %lsr.iv, i32 -8
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br i1 %iv.cmp.not, label %exit, label %loop
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exit: ; preds = %loop
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ret void
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}
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...
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---
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name: crash_145878
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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successors: %bb.1(0x80000000)
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%5:intregs = A2_tfrsi -8
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J2_loop0i %bb.1, 1, implicit-def $lc0, implicit-def $sa0, implicit-def $usr
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bb.1.loop (machine-block-address-taken):
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successors: %bb.2(0x04000000), %bb.1(0x7c000000)
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%1:intregs = PHI %5, %bb.0, %3, %bb.1
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%6:intregs = L2_loadri_io %1, 12 :: (load (s32) from %ir.cgep)
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S2_storeri_io %1, 0, killed %6 :: (store (s32) into %ir.lsr.iv)
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%3:intregs = A2_addi %1, -8
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ENDLOOP0 %bb.1, implicit-def $pc, implicit-def $lc0, implicit $sa0, implicit $lc0
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J2_jump %bb.2, implicit-def dead $pc
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bb.2.exit:
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PS_jmpret $r31, implicit-def dead $pc
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...
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