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