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cb8447ad52
becomes reachable when before it wasn't). Check to make sure that it's not null before trying to use it. llvm-svn: 128434
218 lines
7.1 KiB
LLVM
218 lines
7.1 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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; Crash commoning identical asms.
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; PR6803
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define void @test6(i1 %C) nounwind optsize ssp {
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entry:
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br i1 %C, label %do.body55, label %do.body92
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do.body55: ; preds = %if.else36
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call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !0
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ret void
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do.body92: ; preds = %if.then66
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call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !1
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ret void
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}
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!0 = metadata !{i32 633550}
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!1 = metadata !{i32 634261}
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; Crash during XOR optimization.
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; <rdar://problem/7869290>
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define void @test7() nounwind ssp {
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entry:
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br i1 undef, label %bb14, label %bb67
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bb14:
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%tmp0 = trunc i16 undef to i1
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%tmp1 = load i8* undef, align 8
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%tmp2 = shl i8 %tmp1, 4
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%tmp3 = lshr i8 %tmp2, 7
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%tmp4 = trunc i8 %tmp3 to i1
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%tmp5 = icmp ne i1 %tmp0, %tmp4
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br i1 %tmp5, label %bb14, label %bb67
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bb67:
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ret void
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}
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; Crash when trying to copy AH to AL.
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; PR7540
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define void @copy8bitregs() nounwind {
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entry:
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%div.i = sdiv i32 115200, 0
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%shr8.i = lshr i32 %div.i, 8
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%conv4.i = trunc i32 %shr8.i to i8
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call void asm sideeffect "outb $0, ${1:w}", "{ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i8 %conv4.i, i32 1017) nounwind
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unreachable
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}
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; Crash trying to form conditional increment with fp value.
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; PR8981
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define i32 @test9(double %X) ssp align 2 {
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entry:
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%0 = fcmp one double %X, 0.000000e+00
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%cond = select i1 %0, i32 1, i32 2
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ret i32 %cond
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}
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; PR8514 - Crash in match address do to "heroics" turning and-of-shift into
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; shift of and.
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%struct.S0 = type { i8, [2 x i8], i8 }
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define void @func_59(i32 %p_63) noreturn nounwind {
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entry:
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br label %for.body
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for.body: ; preds = %for.inc44, %entry
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%p_63.addr.1 = phi i32 [ %p_63, %entry ], [ 0, %for.inc44 ]
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%l_74.0 = phi i32 [ 0, %entry ], [ %add46, %for.inc44 ]
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br i1 undef, label %for.inc44, label %bb.nph81
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bb.nph81: ; preds = %for.body
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%tmp98 = add i32 %p_63.addr.1, 0
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br label %for.body22
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for.body22: ; preds = %for.body22, %bb.nph81
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%l_75.077 = phi i64 [ %ins, %for.body22 ], [ undef, %bb.nph81 ]
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%tmp110 = trunc i64 %l_75.077 to i32
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%tmp111 = and i32 %tmp110, 65535
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%arrayidx32.0 = getelementptr [9 x [5 x [2 x %struct.S0]]]* undef, i32 0, i32 %l_74.0, i32 %tmp98, i32 %tmp111, i32 0
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store i8 1, i8* %arrayidx32.0, align 4
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%tmp106 = shl i32 %tmp110, 2
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%tmp107 = and i32 %tmp106, 262140
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%scevgep99.sum114 = or i32 %tmp107, 1
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%arrayidx32.1.1 = getelementptr [9 x [5 x [2 x %struct.S0]]]* undef, i32 0, i32 %l_74.0, i32 %tmp98, i32 0, i32 1, i32 %scevgep99.sum114
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store i8 0, i8* %arrayidx32.1.1, align 1
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%ins = or i64 undef, undef
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br label %for.body22
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for.inc44: ; preds = %for.body
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%add46 = add i32 %l_74.0, 1
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br label %for.body
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}
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; PR9028
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define void @func_60(i64 %A) nounwind {
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entry:
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%0 = zext i64 %A to i160
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%1 = shl i160 %0, 64
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%2 = zext i160 %1 to i576
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%3 = zext i96 undef to i576
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%4 = or i576 %3, %2
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store i576 %4, i576* undef, align 8
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ret void
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}
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; <rdar://problem/9187792>
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define fastcc void @func_61() nounwind sspreq {
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entry:
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%t1 = tail call i64 @llvm.objectsize.i64(i8* undef, i1 false)
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%t2 = icmp eq i64 %t1, -1
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br i1 %t2, label %bb2, label %bb1
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bb1:
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ret void
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bb2:
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ret void
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}
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declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone
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