; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
; RUN: llc -simplifycfg-require-and-preserve-domtree=1 < %s -frame-pointer=all -verify-machineinstrs | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.7"
; This test case has a landing pad with two predecessors, and a variable that
; is undef on the first edge while carrying the first function return value on
; the second edge.
;
; Live range splitting tries to isolate the block containing the first function
; call, and it is important that the last split point is after the function call
; so the return value can spill.
;
; <rdar://problem/10664933>
@Exception = external unnamed_addr constant { ptr, ptr }
declare void @llvm.memset.p0.i32(ptr nocapture, i8, i32, i1) nounwind
define void @f(ptr nocapture %arg, ptr nocapture %arg1, ptr nocapture %arg2, ptr nocapture %arg3, i32 %arg4, i32 %arg5) optsize ssp personality ptr @__gxx_personality_v0 {
; CHECK-LABEL: f:
; CHECK: ## %bb.0: ## %bb
; CHECK-NEXT: pushl %ebp
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: .cfi_offset %ebp, -8
; CHECK-NEXT: movl %esp, %ebp
; CHECK-NEXT: .cfi_def_cfa_register %ebp
; CHECK-NEXT: pushl %ebx
; CHECK-NEXT: pushl %edi
; CHECK-NEXT: pushl %esi
; CHECK-NEXT: subl $28, %esp
; CHECK-NEXT: .cfi_offset %esi, -20
; CHECK-NEXT: .cfi_offset %edi, -16
; CHECK-NEXT: .cfi_offset %ebx, -12
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: xorl %edi, %edi
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: Ltmp0:
; CHECK-NEXT: ## implicit-def: $ebx
; CHECK-NEXT: calll __Znam
; CHECK-NEXT: Ltmp1:
; CHECK-NEXT: ## %bb.1: ## %bb11
; CHECK-NEXT: movl %eax, %esi
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne LBB0_2
; CHECK-NEXT: ## %bb.7: ## %bb31
; CHECK-NEXT: ## implicit-def: $eax
; CHECK-NEXT: ## kill: killed $eax
; CHECK-NEXT: LBB0_8: ## %bb38
; CHECK-NEXT: ## =>This Loop Header: Depth=1
; CHECK-NEXT: ## Child Loop BB0_13 Depth 2
; CHECK-NEXT: ## Child Loop BB0_16 Depth 3
; CHECK-NEXT: ## Child Loop BB0_21 Depth 2
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne LBB0_9
; CHECK-NEXT: ## %bb.10: ## %bb41
; CHECK-NEXT: ## in Loop: Header=BB0_8 Depth=1
; CHECK-NEXT: Ltmp2:
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl %esi, (%esp)
; CHECK-NEXT: calll _Pjii
; CHECK-NEXT: Ltmp3:
; CHECK-NEXT: ## %bb.11: ## %bb42
; CHECK-NEXT: ## in Loop: Header=BB0_8 Depth=1
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: decl %eax
; CHECK-NEXT: testl %eax, %eax
; CHECK-NEXT: jne LBB0_18
; CHECK-NEXT: ## %bb.12: ## %bb45.preheader
; CHECK-NEXT: ## in Loop: Header=BB0_8 Depth=1
; CHECK-NEXT: movl $255, %eax
; CHECK-NEXT: LBB0_13: ## %bb45
; CHECK-NEXT: ## Parent Loop BB0_8 Depth=1
; CHECK-NEXT: ## => This Loop Header: Depth=2
; CHECK-NEXT: ## Child Loop BB0_16 Depth 3
; CHECK-NEXT: movb $1, %cl
; CHECK-NEXT: testb %cl, %cl
; CHECK-NEXT: jne LBB0_19
; CHECK-NEXT: ## %bb.14: ## %bb48
; CHECK-NEXT: ## in Loop: Header=BB0_13 Depth=2
; CHECK-NEXT: jne LBB0_17
; CHECK-NEXT: ## %bb.15: ## %bb49.preheader
; CHECK-NEXT: ## in Loop: Header=BB0_13 Depth=2
; CHECK-NEXT: xorl %ecx, %ecx
; CHECK-NEXT: movl %esi, %edx
; CHECK-NEXT: movl %edi, %ebx
; CHECK-NEXT: LBB0_16: ## %bb49
; CHECK-NEXT: ## Parent Loop BB0_8 Depth=1
; CHECK-NEXT: ## Parent Loop BB0_13 Depth=2
; CHECK-NEXT: ## => This Inner Loop Header: Depth=3
; CHECK-NEXT: incl %ecx
; CHECK-NEXT: addl $4, %edx
; CHECK-NEXT: decl %ebx
; CHECK-NEXT: jne LBB0_16
; CHECK-NEXT: LBB0_17: ## %bb57
; CHECK-NEXT: ## in Loop: Header=BB0_13 Depth=2
; CHECK-NEXT: decl %eax
; CHECK-NEXT: jmp LBB0_13
; CHECK-NEXT: LBB0_19: ## %bb59
; CHECK-NEXT: ## in Loop: Header=BB0_8 Depth=1
; CHECK-NEXT: movl $-4, %eax
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp)
; CHECK-NEXT: movl $0, (%esp)
; CHECK-NEXT: calll ___bzero
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne LBB0_22
; CHECK-NEXT: ## %bb.20: ## %bb61.preheader
; CHECK-NEXT: ## in Loop: Header=BB0_8 Depth=1
; CHECK-NEXT: movl %esi, %eax
; CHECK-NEXT: movl %edi, %ecx
; CHECK-NEXT: LBB0_21: ## %bb61
; CHECK-NEXT: ## Parent Loop BB0_8 Depth=1
; CHECK-NEXT: ## => This Inner Loop Header: Depth=2
; CHECK-NEXT: movl $0, (%eax)
; CHECK-NEXT: addl $4, %eax
; CHECK-NEXT: decl %ecx
; CHECK-NEXT: jne LBB0_21
; CHECK-NEXT: LBB0_22: ## %bb67
; CHECK-NEXT: ## in Loop: Header=BB0_8 Depth=1
; CHECK-NEXT: decl {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Folded Spill
; CHECK-NEXT: jmp LBB0_8
; CHECK-NEXT: LBB0_18: ## %bb43
; CHECK-NEXT: Ltmp5:
; CHECK-NEXT: movl %esi, %ebx
; CHECK-NEXT: calll _OnOverFlow
; CHECK-NEXT: Ltmp6:
; CHECK-NEXT: jmp LBB0_3
; CHECK-NEXT: LBB0_2: ## %bb29
; CHECK-NEXT: Ltmp7:
; CHECK-NEXT: movl %esi, %ebx
; CHECK-NEXT: calll _OnOverFlow
; CHECK-NEXT: Ltmp8:
; CHECK-NEXT: LBB0_3: ## %bb30
; CHECK-NEXT: ud2
; CHECK-NEXT: LBB0_4: ## %bb20.loopexit
; CHECK-NEXT: Ltmp4:
; CHECK-NEXT: LBB0_9:
; CHECK-NEXT: movl %esi, %ebx
; CHECK-NEXT: LBB0_6: ## %bb23
; CHECK-NEXT: testl %ebx, %ebx
; CHECK-NEXT: addl $28, %esp
; CHECK-NEXT: popl %esi
; CHECK-NEXT: popl %edi
; CHECK-NEXT: popl %ebx
; CHECK-NEXT: popl %ebp
; CHECK-NEXT: retl
; CHECK-NEXT: LBB0_5: ## %bb20.loopexit.split-lp
; CHECK-NEXT: Ltmp9:
; CHECK-NEXT: jmp LBB0_6
; CHECK-NEXT: Lfunc_end0:
bb:
br i1 undef, label %bb6, label %bb7
bb6: ; preds = %bb
%tmp = select i1 false, i32 0, i32 undef
br label %bb7
bb7: ; preds = %bb6, %bb
%tmp8 = phi i32 [ %tmp, %bb6 ], [ 0, %bb ]
%tmp9 = shl i32 %tmp8, 2
%tmp10 = invoke noalias ptr @_Znam(i32 undef) optsize
to label %bb11 unwind label %bb20
bb11: ; preds = %bb7
%tmp12 = ptrtoint ptr %tmp10 to i32
%tmp14 = shl i32 %tmp8, 2
%tmp15 = getelementptr i32, ptr %tmp10, i32 undef
%tmp16 = getelementptr i32, ptr %tmp10, i32 undef
%tmp17 = zext i32 %tmp9 to i64
%tmp18 = add i64 %tmp17, -1
%tmp19 = icmp ugt i64 %tmp18, 4294967295
br i1 %tmp19, label %bb29, label %bb31
bb20: ; preds = %bb43, %bb41, %bb29, %bb7
%tmp21 = phi i32 [ undef, %bb7 ], [ %tmp12, %bb43 ], [ %tmp12, %bb29 ], [ %tmp12, %bb41 ]
%tmp22 = landingpad { ptr, i32 }
catch ptr @Exception
br i1 undef, label %bb23, label %bb69
bb23: ; preds = %bb38, %bb20
%tmp24 = phi i32 [ %tmp12, %bb38 ], [ %tmp21, %bb20 ]
%tmp25 = icmp eq i32 %tmp24, 0
br i1 %tmp25, label %bb28, label %bb26
bb26: ; preds = %bb23
%tmp27 = inttoptr i32 %tmp24 to ptr
br label %bb28
bb28: ; preds = %bb26, %bb23
ret void
bb29: ; preds = %bb11
invoke void @OnOverFlow() optsize
to label %bb30 unwind label %bb20
bb30: ; preds = %bb29
unreachable
bb31: ; preds = %bb11
%tmp33 = zext i32 %tmp8 to i64
%tmp34 = add i64 %tmp33, -1
%tmp35 = icmp ugt i64 %tmp34, 4294967295
%tmp36 = icmp sgt i32 %tmp8, 0
%tmp37 = add i32 %tmp9, -4
br label %bb38
bb38: ; preds = %bb67, %bb31
%tmp39 = phi i32 [ %tmp68, %bb67 ], [ undef, %bb31 ]
%tmp40 = icmp sgt i32 %tmp39, undef
br i1 %tmp40, label %bb41, label %bb23
bb41: ; preds = %bb38
invoke void @Pjii(ptr %tmp16, i32 0, i32 %tmp8) optsize
to label %bb42 unwind label %bb20
bb42: ; preds = %bb41
tail call void @llvm.memset.p0.i32(ptr %tmp15, i8 0, i32 %tmp9, i1 false) nounwind
br i1 %tmp35, label %bb43, label %bb45
bb43: ; preds = %bb42
invoke void @OnOverFlow() optsize
to label %bb44 unwind label %bb20
bb44: ; preds = %bb43
unreachable
bb45: ; preds = %bb57, %bb42
%tmp46 = phi i32 [ %tmp58, %bb57 ], [ 255, %bb42 ]
%tmp47 = icmp slt i32 undef, 0
br i1 %tmp47, label %bb48, label %bb59
bb48: ; preds = %bb45
tail call void @llvm.memset.p0.i32(ptr %tmp15, i8 0, i32 %tmp9, i1 false) nounwind
br i1 %tmp36, label %bb49, label %bb57
bb49: ; preds = %bb49, %bb48
%tmp50 = phi i32 [ %tmp55, %bb49 ], [ 0, %bb48 ]
%tmp51 = add i32 %tmp50, undef
%tmp52 = add i32 %tmp50, undef
%tmp53 = getelementptr i32, ptr %tmp10, i32 %tmp52
%tmp54 = load i32, ptr %tmp53, align 4
%tmp55 = add i32 %tmp50, 1
%tmp56 = icmp eq i32 %tmp55, %tmp8
br i1 %tmp56, label %bb57, label %bb49
bb57: ; preds = %bb49, %bb48
%tmp58 = add i32 %tmp46, -1
br label %bb45
bb59: ; preds = %bb45
%tmp60 = ashr i32 %tmp46, 31
tail call void @llvm.memset.p0.i32(ptr null, i8 0, i32 %tmp37, i1 false) nounwind
br i1 %tmp36, label %bb61, label %bb67
bb61: ; preds = %bb61, %bb59
%tmp62 = phi i32 [ %tmp65, %bb61 ], [ 0, %bb59 ]
%tmp63 = add i32 %tmp62, %tmp14
%tmp64 = getelementptr i32, ptr %tmp10, i32 %tmp63
store i32 0, ptr %tmp64, align 4
%tmp65 = add i32 %tmp62, 1
%tmp66 = icmp eq i32 %tmp65, %tmp8
br i1 %tmp66, label %bb67, label %bb61
bb67: ; preds = %bb61, %bb59
%tmp68 = add i32 %tmp39, -1
br label %bb38
bb69: ; preds = %bb20
resume { ptr, i32 } %tmp22
}
declare i32 @__gxx_personality_v0(...)
declare noalias ptr @_Znam(i32) optsize
declare void @Pjii(ptr, i32, i32) optsize
declare i32 @llvm.eh.typeid.for(ptr) nounwind readnone
declare void @OnOverFlow() noreturn optsize ssp align 2
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