derek.holloway
7502bf64a4
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67 lines
2.5 KiB
LLVM
67 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc < %s -mtriple=m68k-linux | FileCheck %s
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; In this bug, we can see that a chain was generated that started from an ADJCALLSTACKUP
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; (lowered callseq_end for fmul) and crossed over to join the unrelated chain going through
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; the ADJCALLSTACKUP/DOWN for @double_arg. This resulted in an assertion firing during
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; scheduling, as the ADJCALLSTACKDOWN nodes do not depend on each other. This meant that
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; two ADJCALLSTACKUP (lowered callseq_end) nodes were encountered for the chain branch for
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; @double_arg, but only one ADJCALLSTACKDOWN would be present as they did not depend on
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; each other.
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declare float @float_arg(float)
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declare float @double_arg(double)
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; This works correctly
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define float @float_arg_test(ptr %inout) nounwind {
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; CHECK-LABEL: float_arg_test:
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; CHECK: ; %bb.0: ; %start
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; CHECK-NEXT: suba.l #12, %sp
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; CHECK-NEXT: movem.l %a2, (8,%sp) ; 8-byte Folded Spill
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; CHECK-NEXT: move.l #0, (%sp)
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; CHECK-NEXT: jsr float_arg
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; CHECK-NEXT: move.l (16,%sp), %a2
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; CHECK-NEXT: move.l (%a2), %d0
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; CHECK-NEXT: move.l %d0, (%sp)
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; CHECK-NEXT: move.l #0, (4,%sp)
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; CHECK-NEXT: jsr __mulsf3
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; CHECK-NEXT: move.l %d0, (%a2)
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; CHECK-NEXT: moveq #0, %d0
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; CHECK-NEXT: movem.l (8,%sp), %a2 ; 8-byte Folded Reload
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; CHECK-NEXT: adda.l #12, %sp
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; CHECK-NEXT: rts
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start:
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%_58 = call float @float_arg(float 0.000000e+00)
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%_60 = load float, ptr %inout, align 8
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%_57 = fmul float 0.000000e+00, %_60
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store float %_57, ptr %inout, align 8
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ret float 0.000000e+00
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}
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; This fails to find a chain
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define float @double_arg_test(ptr %inout) nounwind {
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; CHECK-LABEL: double_arg_test:
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; CHECK: ; %bb.0: ; %start
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; CHECK-NEXT: suba.l #12, %sp
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; CHECK-NEXT: movem.l %a2, (8,%sp) ; 8-byte Folded Spill
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; CHECK-NEXT: move.l #0, (4,%sp)
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; CHECK-NEXT: move.l #0, (%sp)
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; CHECK-NEXT: jsr double_arg
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; CHECK-NEXT: move.l (16,%sp), %a2
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; CHECK-NEXT: move.l (%a2), %d0
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; CHECK-NEXT: move.l %d0, (%sp)
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; CHECK-NEXT: move.l #0, (4,%sp)
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; CHECK-NEXT: jsr __mulsf3
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; CHECK-NEXT: move.l %d0, (%a2)
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; CHECK-NEXT: moveq #0, %d0
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; CHECK-NEXT: movem.l (8,%sp), %a2 ; 8-byte Folded Reload
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; CHECK-NEXT: adda.l #12, %sp
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; CHECK-NEXT: rts
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start:
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%_58 = call float @double_arg(double 0.000000e+00)
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%_60 = load float, ptr %inout, align 8
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%_57 = fmul float 0.000000e+00, %_60
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store float %_57, ptr %inout, align 8
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ret float 0.000000e+00
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}
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