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0220ba7995
function, then the BB is RAUW'd before the definition is emitted. There are still two cases not being handled, but this should improve us back to the situation before I touched anything. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98566 91177308-0d34-0410-b5e6-96231b3b80d8
118 lines
4.0 KiB
LLVM
118 lines
4.0 KiB
LLVM
; RUN: llc -march=x86 %s -o -
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; RUN: llc -march=x86-64 %s -o -
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; PR6497
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; Chain and flag folding issues.
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define i32 @test1() nounwind ssp {
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entry:
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%tmp5.i = volatile load i32* undef ; <i32> [#uses=1]
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%conv.i = zext i32 %tmp5.i to i64 ; <i64> [#uses=1]
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%tmp12.i = volatile load i32* undef ; <i32> [#uses=1]
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%conv13.i = zext i32 %tmp12.i to i64 ; <i64> [#uses=1]
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%shl.i = shl i64 %conv13.i, 32 ; <i64> [#uses=1]
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%or.i = or i64 %shl.i, %conv.i ; <i64> [#uses=1]
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%add16.i = add i64 %or.i, 256 ; <i64> [#uses=1]
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%shr.i = lshr i64 %add16.i, 8 ; <i64> [#uses=1]
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%conv19.i = trunc i64 %shr.i to i32 ; <i32> [#uses=1]
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volatile store i32 %conv19.i, i32* undef
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ret i32 undef
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}
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; PR6533
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define void @test2(i1 %x, i32 %y) nounwind {
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%land.ext = zext i1 %x to i32 ; <i32> [#uses=1]
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%and = and i32 %y, 1 ; <i32> [#uses=1]
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%xor = xor i32 %and, %land.ext ; <i32> [#uses=1]
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%cmp = icmp eq i32 %xor, 1 ; <i1> [#uses=1]
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br i1 %cmp, label %if.end, label %if.then
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if.then: ; preds = %land.end
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ret void
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if.end: ; preds = %land.end
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ret void
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}
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; PR6577
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%pair = type { i64, double }
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define void @test3() {
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dependentGraph243.exit:
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%subject19 = load %pair* undef ; <%1> [#uses=1]
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%0 = extractvalue %pair %subject19, 1 ; <double> [#uses=2]
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%1 = select i1 undef, double %0, double undef ; <double> [#uses=1]
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%2 = select i1 undef, double %1, double %0 ; <double> [#uses=1]
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%3 = insertvalue %pair undef, double %2, 1 ; <%1> [#uses=1]
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store %pair %3, %pair* undef
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ret void
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}
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; PR6605
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define i64 @test4(i8* %P) nounwind ssp {
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entry:
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%tmp1 = load i8* %P ; <i8> [#uses=3]
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%tobool = icmp eq i8 %tmp1, 0 ; <i1> [#uses=1]
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%tmp58 = sext i1 %tobool to i8 ; <i8> [#uses=1]
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%mul.i = and i8 %tmp58, %tmp1 ; <i8> [#uses=1]
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%conv6 = zext i8 %mul.i to i32 ; <i32> [#uses=1]
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%cmp = icmp ne i8 %tmp1, 1 ; <i1> [#uses=1]
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%conv11 = zext i1 %cmp to i32 ; <i32> [#uses=1]
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%call12 = tail call i32 @safe(i32 %conv11) nounwind ; <i32> [#uses=1]
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%and = and i32 %conv6, %call12 ; <i32> [#uses=1]
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%tobool13 = icmp eq i32 %and, 0 ; <i1> [#uses=1]
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br i1 %tobool13, label %if.else, label %return
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if.else: ; preds = %entry
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br label %return
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return: ; preds = %if.else, %entry
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ret i64 undef
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}
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declare i32 @safe(i32)
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; PR6607
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define fastcc void @test5(i32 %FUNC) nounwind {
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foo:
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%0 = load i8* undef, align 1 ; <i8> [#uses=3]
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%1 = sext i8 %0 to i32 ; <i32> [#uses=2]
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%2 = zext i8 %0 to i32 ; <i32> [#uses=1]
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%tmp1.i5037 = urem i32 %2, 10 ; <i32> [#uses=1]
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%tmp.i5038 = icmp ugt i32 %tmp1.i5037, 15 ; <i1> [#uses=1]
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%3 = zext i1 %tmp.i5038 to i8 ; <i8> [#uses=1]
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%4 = icmp slt i8 %0, %3 ; <i1> [#uses=1]
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%5 = add nsw i32 %1, 256 ; <i32> [#uses=1]
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%storemerge.i.i57 = select i1 %4, i32 %5, i32 %1 ; <i32> [#uses=1]
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%6 = shl i32 %storemerge.i.i57, 16 ; <i32> [#uses=1]
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%7 = sdiv i32 %6, -256 ; <i32> [#uses=1]
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%8 = trunc i32 %7 to i8 ; <i8> [#uses=1]
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store i8 %8, i8* undef, align 1
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ret void
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}
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;; Issues with referring to a label that gets RAUW'd later.
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define i32 @test6a() nounwind {
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entry:
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%target = bitcast i8* blockaddress(@test6b, %test_label) to i8*
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call i32 @test6b(i8* %target)
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ret i32 0
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}
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define i32 @test6b(i8* %target) nounwind {
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entry:
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indirectbr i8* %target, [label %test_label]
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test_label:
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; assume some code here...
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br label %ret
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ret:
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ret i32 -1
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}
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