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598ee5a3e7
For one predicate to subsume another, they must both check the same condition register. Failure to check this prerequisite was causing miscompiles. Fixes PR18003. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197089 91177308-0d34-0410-b5e6-96231b3b80d8
66 lines
2.4 KiB
LLVM
66 lines
2.4 KiB
LLVM
; RUN: llc < %s -mcpu=ppc64 | FileCheck %s
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target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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; Function Attrs: nounwind
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define zeroext i1 @test1() unnamed_addr #0 align 2 {
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; CHECK-LABEL: @test1
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entry:
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br i1 undef, label %lor.end, label %lor.rhs
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lor.rhs: ; preds = %entry
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unreachable
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lor.end: ; preds = %entry
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br i1 undef, label %land.rhs, label %if.then
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if.then: ; preds = %lor.end
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br i1 undef, label %return, label %if.end.i24
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if.end.i24: ; preds = %if.then
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%0 = load i32* undef, align 4
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%lnot.i.i16.i23 = icmp eq i32 %0, 0
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br i1 %lnot.i.i16.i23, label %if.end7.i37, label %test.exit27.i34
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test.exit27.i34: ; preds = %if.end.i24
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br i1 undef, label %return, label %if.end7.i37
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if.end7.i37: ; preds = %test.exit27.i34, %if.end.i24
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%tobool.i.i36 = icmp eq i8 undef, 0
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br i1 %tobool.i.i36, label %return, label %if.then9.i39
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if.then9.i39: ; preds = %if.end7.i37
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br i1 %lnot.i.i16.i23, label %return, label %lor.rhs.i.i49
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; CHECK: .LBB0_7:
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; CHECK: beq 1, .LBB0_10
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; CHECK: beq 0, .LBB0_10
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; CHECK: .LBB0_9:
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lor.rhs.i.i49: ; preds = %if.then9.i39
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%cmp.i.i.i.i48 = icmp ne i64 undef, 0
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br label %return
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land.rhs: ; preds = %lor.end
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br i1 undef, label %return, label %if.end.i
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if.end.i: ; preds = %land.rhs
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br i1 undef, label %return, label %if.then9.i
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if.then9.i: ; preds = %if.end.i
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br i1 undef, label %return, label %lor.rhs.i.i
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lor.rhs.i.i: ; preds = %if.then9.i
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%cmp.i.i.i.i = icmp ne i64 undef, 0
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br label %return
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return: ; preds = %lor.rhs.i.i, %if.then9.i, %if.end.i, %land.rhs, %lor.rhs.i.i49, %if.then9.i39, %if.end7.i37, %test.exit27.i34, %if.then
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%retval.0 = phi i1 [ false, %if.then ], [ false, %test.exit27.i34 ], [ true, %if.end7.i37 ], [ true, %if.then9.i39 ], [ %cmp.i.i.i.i48, %lor.rhs.i.i49 ], [ false, %land.rhs ], [ true, %if.end.i ], [ true, %if.then9.i ], [ %cmp.i.i.i.i, %lor.rhs.i.i ]
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ret i1 %retval.0
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}
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attributes #0 = { nounwind }
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