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llvm-mirror/test/CodeGen/X86/crash.ll
Jakob Stoklund Olesen 795083115c Ensure CopyToReg nodes are always glued to the call instruction. 
The CopyToReg nodes that set up the argument registers before a call
must be glued to the call instruction. Otherwise, the scheduler may emit
the physreg copies long before the call, causing long live ranges for
the fixed registers.

Besides disabling good register allocation, that can also expose
problems when EmitInstrWithCustomInserter() splits a basic block during
the live range of a physreg.

llvm-svn: 159721
2012-07-04 19:28:31 +00:00

445 lines
15 KiB
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; RUN: llc -march=x86 < %s -verify-machineinstrs
; RUN: llc -march=x86-64 < %s -verify-machineinstrs
; PR6497
; Chain and flag folding issues.
define i32 @test1() nounwind ssp {
entry:
%tmp5.i = load volatile i32* undef ; <i32> [#uses=1]
%conv.i = zext i32 %tmp5.i to i64 ; <i64> [#uses=1]
%tmp12.i = load volatile i32* undef ; <i32> [#uses=1]
%conv13.i = zext i32 %tmp12.i to i64 ; <i64> [#uses=1]
%shl.i = shl i64 %conv13.i, 32 ; <i64> [#uses=1]
%or.i = or i64 %shl.i, %conv.i ; <i64> [#uses=1]
%add16.i = add i64 %or.i, 256 ; <i64> [#uses=1]
%shr.i = lshr i64 %add16.i, 8 ; <i64> [#uses=1]
%conv19.i = trunc i64 %shr.i to i32 ; <i32> [#uses=1]
store volatile i32 %conv19.i, i32* undef
ret i32 undef
}
; PR6533
define void @test2(i1 %x, i32 %y) nounwind {
%land.ext = zext i1 %x to i32 ; <i32> [#uses=1]
%and = and i32 %y, 1 ; <i32> [#uses=1]
%xor = xor i32 %and, %land.ext ; <i32> [#uses=1]
%cmp = icmp eq i32 %xor, 1 ; <i1> [#uses=1]
br i1 %cmp, label %if.end, label %if.then
if.then: ; preds = %land.end
ret void
if.end: ; preds = %land.end
ret void
}
; PR6577
%pair = type { i64, double }
define void @test3() {
dependentGraph243.exit:
%subject19 = load %pair* undef ; <%1> [#uses=1]
%0 = extractvalue %pair %subject19, 1 ; <double> [#uses=2]
%1 = select i1 undef, double %0, double undef ; <double> [#uses=1]
%2 = select i1 undef, double %1, double %0 ; <double> [#uses=1]
%3 = insertvalue %pair undef, double %2, 1 ; <%1> [#uses=1]
store %pair %3, %pair* undef
ret void
}
; PR6605
define i64 @test4(i8* %P) nounwind ssp {
entry:
%tmp1 = load i8* %P ; <i8> [#uses=3]
%tobool = icmp eq i8 %tmp1, 0 ; <i1> [#uses=1]
%tmp58 = sext i1 %tobool to i8 ; <i8> [#uses=1]
%mul.i = and i8 %tmp58, %tmp1 ; <i8> [#uses=1]
%conv6 = zext i8 %mul.i to i32 ; <i32> [#uses=1]
%cmp = icmp ne i8 %tmp1, 1 ; <i1> [#uses=1]
%conv11 = zext i1 %cmp to i32 ; <i32> [#uses=1]
%call12 = tail call i32 @safe(i32 %conv11) nounwind ; <i32> [#uses=1]
%and = and i32 %conv6, %call12 ; <i32> [#uses=1]
%tobool13 = icmp eq i32 %and, 0 ; <i1> [#uses=1]
br i1 %tobool13, label %if.else, label %return
if.else: ; preds = %entry
br label %return
return: ; preds = %if.else, %entry
ret i64 undef
}
declare i32 @safe(i32)
; PR6607
define fastcc void @test5(i32 %FUNC) nounwind {
foo:
%0 = load i8* undef, align 1 ; <i8> [#uses=3]
%1 = sext i8 %0 to i32 ; <i32> [#uses=2]
%2 = zext i8 %0 to i32 ; <i32> [#uses=1]
%tmp1.i5037 = urem i32 %2, 10 ; <i32> [#uses=1]
%tmp.i5038 = icmp ugt i32 %tmp1.i5037, 15 ; <i1> [#uses=1]
%3 = zext i1 %tmp.i5038 to i8 ; <i8> [#uses=1]
%4 = icmp slt i8 %0, %3 ; <i1> [#uses=1]
%5 = add nsw i32 %1, 256 ; <i32> [#uses=1]
%storemerge.i.i57 = select i1 %4, i32 %5, i32 %1 ; <i32> [#uses=1]
%6 = shl i32 %storemerge.i.i57, 16 ; <i32> [#uses=1]
%7 = sdiv i32 %6, -256 ; <i32> [#uses=1]
%8 = trunc i32 %7 to i8 ; <i8> [#uses=1]
store i8 %8, i8* undef, align 1
ret void
}
; Crash commoning identical asms.
; PR6803
define void @test6(i1 %C) nounwind optsize ssp {
entry:
br i1 %C, label %do.body55, label %do.body92
do.body55: ; preds = %if.else36
call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !0
ret void
do.body92: ; preds = %if.then66
call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !1
ret void
}
!0 = metadata !{i32 633550}
!1 = metadata !{i32 634261}
; Crash during XOR optimization.
; <rdar://problem/7869290>
define void @test7() nounwind ssp {
entry:
br i1 undef, label %bb14, label %bb67
bb14:
%tmp0 = trunc i16 undef to i1
%tmp1 = load i8* undef, align 8
%tmp2 = shl i8 %tmp1, 4
%tmp3 = lshr i8 %tmp2, 7
%tmp4 = trunc i8 %tmp3 to i1
%tmp5 = icmp ne i1 %tmp0, %tmp4
br i1 %tmp5, label %bb14, label %bb67
bb67:
ret void
}
; Crash when trying to copy AH to AL.
; PR7540
define void @copy8bitregs() nounwind {
entry:
%div.i = sdiv i32 115200, 0
%shr8.i = lshr i32 %div.i, 8
%conv4.i = trunc i32 %shr8.i to i8
call void asm sideeffect "outb $0, ${1:w}", "{ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i8 %conv4.i, i32 1017) nounwind
unreachable
}
; Crash trying to form conditional increment with fp value.
; PR8981
define i32 @test9(double %X) ssp align 2 {
entry:
%0 = fcmp one double %X, 0.000000e+00
%cond = select i1 %0, i32 1, i32 2
ret i32 %cond
}
; PR8514 - Crash in match address do to "heroics" turning and-of-shift into
; shift of and.
%struct.S0 = type { i8, [2 x i8], i8 }
define void @func_59(i32 %p_63) noreturn nounwind {
entry:
br label %for.body
for.body: ; preds = %for.inc44, %entry
%p_63.addr.1 = phi i32 [ %p_63, %entry ], [ 0, %for.inc44 ]
%l_74.0 = phi i32 [ 0, %entry ], [ %add46, %for.inc44 ]
br i1 undef, label %for.inc44, label %bb.nph81
bb.nph81: ; preds = %for.body
%tmp98 = add i32 %p_63.addr.1, 0
br label %for.body22
for.body22: ; preds = %for.body22, %bb.nph81
%l_75.077 = phi i64 [ %ins, %for.body22 ], [ undef, %bb.nph81 ]
%tmp110 = trunc i64 %l_75.077 to i32
%tmp111 = and i32 %tmp110, 65535
%arrayidx32.0 = getelementptr [9 x [5 x [2 x %struct.S0]]]* undef, i32 0, i32 %l_74.0, i32 %tmp98, i32 %tmp111, i32 0
store i8 1, i8* %arrayidx32.0, align 4
%tmp106 = shl i32 %tmp110, 2
%tmp107 = and i32 %tmp106, 262140
%scevgep99.sum114 = or i32 %tmp107, 1
%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
store i8 0, i8* %arrayidx32.1.1, align 1
%ins = or i64 undef, undef
br label %for.body22
for.inc44: ; preds = %for.body
%add46 = add i32 %l_74.0, 1
br label %for.body
}
; PR9028
define void @func_60(i64 %A) nounwind {
entry:
%0 = zext i64 %A to i160
%1 = shl i160 %0, 64
%2 = zext i160 %1 to i576
%3 = zext i96 undef to i576
%4 = or i576 %3, %2
store i576 %4, i576* undef, align 8
ret void
}
; <rdar://problem/9187792>
define fastcc void @func_61() nounwind sspreq {
entry:
%t1 = tail call i64 @llvm.objectsize.i64(i8* undef, i1 false)
%t2 = icmp eq i64 %t1, -1
br i1 %t2, label %bb2, label %bb1
bb1:
ret void
bb2:
ret void
}
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone
; PR10277
; This test has dead code elimination caused by remat during spilling.
; DCE causes a live interval to break into connected components.
; One of the components is spilled.
%t2 = type { i8 }
%t9 = type { %t10 }
%t10 = type { %t11 }
%t11 = type { %t12 }
%t12 = type { %t13*, %t13*, %t13* }
%t13 = type { %t14*, %t15, %t15 }
%t14 = type opaque
%t15 = type { i8, i32, i32 }
%t16 = type { %t17, i8* }
%t17 = type { %t18 }
%t18 = type { %t19 }
%t19 = type { %t20*, %t20*, %t20* }
%t20 = type { i32, i32 }
%t21 = type { %t13* }
define void @_ZNK4llvm17MipsFrameLowering12emitPrologueERNS_15MachineFunctionE() ssp align 2 {
bb:
%tmp = load %t9** undef, align 4, !tbaa !0
%tmp2 = getelementptr inbounds %t9* %tmp, i32 0, i32 0
%tmp3 = getelementptr inbounds %t9* %tmp, i32 0, i32 0, i32 0, i32 0, i32 1
br label %bb4
bb4: ; preds = %bb37, %bb
%tmp5 = phi i96 [ undef, %bb ], [ %tmp38, %bb37 ]
%tmp6 = phi i96 [ undef, %bb ], [ %tmp39, %bb37 ]
br i1 undef, label %bb34, label %bb7
bb7: ; preds = %bb4
%tmp8 = load i32* undef, align 4
%tmp9 = and i96 %tmp6, 4294967040
%tmp10 = zext i32 %tmp8 to i96
%tmp11 = shl nuw nsw i96 %tmp10, 32
%tmp12 = or i96 %tmp9, %tmp11
%tmp13 = or i96 %tmp12, 1
%tmp14 = load i32* undef, align 4
%tmp15 = and i96 %tmp5, 4294967040
%tmp16 = zext i32 %tmp14 to i96
%tmp17 = shl nuw nsw i96 %tmp16, 32
%tmp18 = or i96 %tmp15, %tmp17
%tmp19 = or i96 %tmp18, 1
%tmp20 = load i8* undef, align 1
%tmp21 = and i8 %tmp20, 1
%tmp22 = icmp ne i8 %tmp21, 0
%tmp23 = select i1 %tmp22, i96 %tmp19, i96 %tmp13
%tmp24 = select i1 %tmp22, i96 %tmp13, i96 %tmp19
store i96 %tmp24, i96* undef, align 4
%tmp25 = load %t13** %tmp3, align 4
%tmp26 = icmp eq %t13* %tmp25, undef
br i1 %tmp26, label %bb28, label %bb27
bb27: ; preds = %bb7
br label %bb29
bb28: ; preds = %bb7
call void @_ZNSt6vectorIN4llvm11MachineMoveESaIS1_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS1_S3_EERKS1_(%t10* %tmp2, %t21* byval align 4 undef, %t13* undef)
br label %bb29
bb29: ; preds = %bb28, %bb27
store i96 %tmp23, i96* undef, align 4
%tmp30 = load %t13** %tmp3, align 4
br i1 false, label %bb33, label %bb31
bb31: ; preds = %bb29
%tmp32 = getelementptr inbounds %t13* %tmp30, i32 1
store %t13* %tmp32, %t13** %tmp3, align 4
br label %bb37
bb33: ; preds = %bb29
unreachable
bb34: ; preds = %bb4
br i1 undef, label %bb36, label %bb35
bb35: ; preds = %bb34
store %t13* null, %t13** %tmp3, align 4
br label %bb37
bb36: ; preds = %bb34
call void @_ZNSt6vectorIN4llvm11MachineMoveESaIS1_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS1_S3_EERKS1_(%t10* %tmp2, %t21* byval align 4 undef, %t13* undef)
br label %bb37
bb37: ; preds = %bb36, %bb35, %bb31
%tmp38 = phi i96 [ %tmp23, %bb31 ], [ %tmp5, %bb35 ], [ %tmp5, %bb36 ]
%tmp39 = phi i96 [ %tmp24, %bb31 ], [ %tmp6, %bb35 ], [ %tmp6, %bb36 ]
%tmp40 = add i32 undef, 1
br label %bb4
}
declare %t14* @_ZN4llvm9MCContext16CreateTempSymbolEv(%t2*)
declare void @_ZNSt6vectorIN4llvm11MachineMoveESaIS1_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS1_S3_EERKS1_(%t10*, %t21* byval align 4, %t13*)
declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind
declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind
; PR10463
; Spilling a virtual register with <undef> uses.
define void @autogen_239_1000() {
BB:
%Shuff = shufflevector <8 x double> undef, <8 x double> undef, <8 x i32> <i32 0, i32 2, i32 4, i32 6, i32 8, i32 10, i32 undef, i32 undef>
br label %CF
CF:
%B16 = frem <8 x double> zeroinitializer, %Shuff
%E19 = extractelement <8 x double> %Shuff, i32 5
br i1 undef, label %CF, label %CF75
CF75:
br i1 undef, label %CF75, label %CF76
CF76:
store double %E19, double* undef
br i1 undef, label %CF76, label %CF77
CF77:
%B55 = fmul <8 x double> %B16, undef
br label %CF77
}
; PR10527
define void @pr10527() nounwind uwtable {
entry:
br label %"4"
"3":
%0 = load <2 x i32>* null, align 8
%1 = xor <2 x i32> zeroinitializer, %0
%2 = and <2 x i32> %1, %6
%3 = or <2 x i32> undef, %2
%4 = and <2 x i32> %3, undef
store <2 x i32> %4, <2 x i32>* undef
%5 = load <2 x i32>* undef, align 1
br label %"4"
"4":
%6 = phi <2 x i32> [ %5, %"3" ], [ zeroinitializer, %entry ]
%7 = icmp ult i32 undef, undef
br i1 %7, label %"3", label %"5"
"5":
ret void
}
; PR11078
;
; A virtual register used by the "foo" inline asm memory operand gets
; constrained to GR32_ABCD during coalescing. This makes the inline asm
; impossible to allocate without splitting the live range and reinflating the
; register class around the inline asm.
;
; The constraint originally comes from the TEST8ri optimization of (icmp (and %t0, 1), 0).
@__force_order = external hidden global i32, align 4
define void @pr11078(i32* %pgd) nounwind {
entry:
%t0 = load i32* %pgd, align 4
%and2 = and i32 %t0, 1
%tobool = icmp eq i32 %and2, 0
br i1 %tobool, label %if.then, label %if.end
if.then:
%t1 = tail call i32 asm sideeffect "bar", "=r,=*m,~{dirflag},~{fpsr},~{flags}"(i32* @__force_order) nounwind
br label %if.end
if.end:
%t6 = inttoptr i32 %t0 to i64*
%t11 = tail call i64 asm sideeffect "foo", "=*m,=A,{bx},{cx},1,~{memory},~{dirflag},~{fpsr},~{flags}"(i64* %t6, i32 0, i32 0, i64 0) nounwind
ret void
}
; Avoid emitting wrong kill flags from InstrEmitter.
; InstrEmitter::EmitSubregNode() may steal virtual registers from already
; emitted blocks when isCoalescableExtInstr points out the opportunity.
; Make sure kill flags are cleared on the newly global virtual register.
define i64 @ov_read(i8* %vf, i8* nocapture %buffer, i32 %length, i32 %bigendianp, i32 %word, i32 %sgned, i32* %bitstream) nounwind uwtable ssp {
entry:
br i1 undef, label %return, label %while.body.preheader
while.body.preheader: ; preds = %entry
br i1 undef, label %if.then3, label %if.end7
if.then3: ; preds = %while.body.preheader
%0 = load i32* undef, align 4
br i1 undef, label %land.lhs.true.i255, label %if.end7
land.lhs.true.i255: ; preds = %if.then3
br i1 undef, label %if.then.i256, label %if.end7
if.then.i256: ; preds = %land.lhs.true.i255
%sub.i = sub i32 0, %0
%conv = sext i32 %sub.i to i64
br i1 undef, label %if.end7, label %while.end
if.end7: ; preds = %if.then.i256, %land.lhs.true.i255, %if.then3, %while.body.preheader
unreachable
while.end: ; preds = %if.then.i256
%cmp18 = icmp sgt i32 %sub.i, 0
%.conv = select i1 %cmp18, i64 -131, i64 %conv
ret i64 %.conv
return: ; preds = %entry
ret i64 -131
}
; The tail call to a varargs function sets %AL.
; uitofp expands to an FCMOV instruction which splits the basic block.
; Make sure the live range of %AL isn't split.
@.str = private unnamed_addr constant { [1 x i8], [63 x i8] } zeroinitializer, align 32
define void @pr13188(i64* nocapture %this) uwtable ssp address_safety align 2 {
entry:
%x7 = load i64* %this, align 8
%sub = add i64 %x7, -1
%conv = uitofp i64 %sub to float
%div = fmul float %conv, 5.000000e-01
%conv2 = fpext float %div to double
tail call void (...)* @_Z6PrintFz(i8* getelementptr inbounds ({ [1 x i8], [63 x i8] }* @.str, i64 0, i32 0, i64 0), double %conv2)
ret void
}
declare void @_Z6PrintFz(...)
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