; RUN: llc -verify-machineinstrs < %s | FileCheck %s
target datalayout = "e-p:64:64-i64:64-n32:64"
target triple = "powerpc64le-linux"
%struct.BSS1.0.9.28.39.43.46.47.54.56.57.64.65.69.71.144 = type <{ [220 x i8] }>
@.BSS1 = external unnamed_addr global %struct.BSS1.0.9.28.39.43.46.47.54.56.57.64.65.69.71.144, align 32
; Function Attrs: noinline nounwind
define void @ety2_() #0 {
; This test case used to crash because the preinc prep pass would assume that
; if X-Y could be simplified to a constant, than so could Y-X. While not
; desirable, we cannot actually make this guarantee.
; CHECK-LABEL: @ety2_
L.entry:
%0 = load i32, ptr undef, align 4
%1 = sext i32 %0 to i64
%2 = shl nsw i64 %1, 3
%3 = add nsw i64 %2, 8
br label %L.LB1_425
L.LB1_425: ; preds = %L.LB1_427, %L.entry
%4 = phi i64 [ %21, %L.LB1_427 ], [ undef, %L.entry ]
br i1 undef, label %L.LB1_427, label %L.LB1_816
L.LB1_816: ; preds = %L.LB1_425
switch i32 undef, label %L.LB1_432 [
i32 30, label %L.LB1_805
i32 10, label %L.LB1_451
i32 20, label %L.LB1_451
]
L.LB1_451: ; preds = %L.LB1_816, %L.LB1_816
unreachable
L.LB1_432: ; preds = %L.LB1_816
%.in.31 = lshr i64 %4, 32
%5 = trunc i64 %.in.31 to i32
br i1 undef, label %L.LB1_769, label %L.LB1_455
L.LB1_455: ; preds = %L.LB1_432
unreachable
L.LB1_769: ; preds = %L.LB1_432
%6 = sext i32 %5 to i64
%7 = add nsw i64 %6, 2
%8 = add nsw i64 %6, -1
%9 = mul i64 %8, %1
%10 = add i64 %9, %7
%11 = shl i64 %10, 3
%12 = getelementptr i8, ptr undef, i64 %11
%13 = mul nsw i64 %6, %1
%14 = add i64 %7, %13
%15 = shl i64 %14, 3
%16 = getelementptr i8, ptr undef, i64 %15
br i1 undef, label %L.LB1_662, label %L.LB1_662.prol
L.LB1_662.prol: ; preds = %L.LB1_662.prol, %L.LB1_769
%indvars.iv.next20.prol = add nuw nsw i64 undef, 1
br i1 undef, label %L.LB1_662, label %L.LB1_662.prol
L.LB1_662: ; preds = %L.LB1_437.2, %L.LB1_662.prol, %L.LB1_769
%indvars.iv19 = phi i64 [ %indvars.iv.next20.3, %L.LB1_437.2 ], [ 0, %L.LB1_769 ], [ %indvars.iv.next20.prol, %L.LB1_662.prol ]
%indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
%17 = mul i64 %indvars.iv.next20, %3
%18 = getelementptr i8, ptr %16, i64 %17
%19 = bitcast ptr %18 to ptr
store double 0.000000e+00, ptr %19, align 8
%indvars.iv.next20.1 = add nsw i64 %indvars.iv19, 2
%20 = mul i64 %indvars.iv.next20.1, %3
br i1 undef, label %L.LB1_437.2, label %L.LB1_824.2
L.LB1_427: ; preds = %L.LB1_425
%21 = load i64, ptr getelementptr inbounds (%struct.BSS1.0.9.28.39.43.46.47.54.56.57.64.65.69.71.144, ptr @.BSS1, i64 0, i32 0, i64 8), align 8
br label %L.LB1_425
L.LB1_805: ; preds = %L.LB1_816
ret void
L.LB1_824.2: ; preds = %L.LB1_662
%22 = getelementptr i8, ptr %12, i64 %20
%23 = bitcast ptr %22 to ptr
store double 0.000000e+00, ptr %23, align 8
br label %L.LB1_437.2
L.LB1_437.2: ; preds = %L.LB1_824.2, %L.LB1_662
%indvars.iv.next20.3 = add nsw i64 %indvars.iv19, 4
br label %L.LB1_662
}
attributes #0 = { noinline nounwind }
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