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llvm-project/llvm/test/Transforms/ObjCARC/move-and-form-retain-autore...

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The ARC language-specific optimizer. Credit to Dan Gohman. llvm-svn: 133108
2011-06-16 07:37:01 +08:00
; RUN: opt -S -objc-arc-contract < %s | FileCheck %s
; The optimizer should be able to move the autorelease past a control triangle
; and various scary looking things and fold it into an objc_retainAutorelease.
; CHECK: bb57:
; CHECK: tail call i8* @objc_retainAutorelease(i8* %tmp71x) nounwind
; CHECK: bb99:
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-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin11.0.0"
%0 = type { i8* (i8*, %1*, ...)*, i8* }
%1 = type { i8*, i8* }
%2 = type { %2*, %2*, %3*, i8* (i8*, i8*)**, %4* }
%3 = type opaque
%4 = type { i32, i32, i32, i8*, i8*, %5*, %7*, %10*, i8*, %9* }
%5 = type { i32, i32, [0 x %6] }
%6 = type { i8*, i8*, i8* }
%7 = type { i64, [0 x %8*] }
%8 = type { i8*, i8*, %7*, %5*, %5*, %5*, %5*, %9*, i32, i32 }
%9 = type { i32, i32, [0 x %1] }
%10 = type { i32, i32, [0 x %11] }
%11 = type { i64*, i8*, i8*, i32, i32 }
%12 = type { i32*, i32, i8*, i64 }
%13 = type opaque
%14 = type opaque
%15 = type opaque
%16 = type opaque
%17 = type opaque
%18 = type opaque
%19 = type opaque
%20 = type opaque
%21 = type opaque
%22 = type opaque
%23 = type opaque
%24 = type opaque
%25 = type opaque
@"\01l_objc_msgSend_fixup_alloc" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
@"\01L_OBJC_SELECTOR_REFERENCES_8" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_3725" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_CLASSLIST_REFERENCES_$_40" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
@"\01L_OBJC_SELECTOR_REFERENCES_4227" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_4631" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_CLASSLIST_REFERENCES_$_70" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
@"\01L_OBJC_SELECTOR_REFERENCES_148" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_159" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_188" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_328" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01l_objc_msgSend_fixup_objectAtIndex_" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
@_unnamed_cfstring_386 = external hidden constant %12, section "__DATA,__cfstring"
@"\01l_objc_msgSend_fixup_count" = external hidden global %0, section "__DATA, __objc_msgrefs, coalesced", align 16
@"\01L_OBJC_SELECTOR_REFERENCES_389" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_391" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_393" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@NSPrintHeaderAndFooter = external constant %13*
@"\01L_OBJC_SELECTOR_REFERENCES_395" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_CLASSLIST_REFERENCES_$_396" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
@"\01L_OBJC_SELECTOR_REFERENCES_398" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_400" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_402" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_404" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_406" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_408" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_CLASSLIST_REFERENCES_$_409" = external hidden global %2*, section "__DATA, __objc_classrefs, regular, no_dead_strip", align 8
@"\01L_OBJC_SELECTOR_REFERENCES_411" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_413" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
@"\01L_OBJC_SELECTOR_REFERENCES_415" = external hidden global i8*, section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
declare i8* @objc_msgSend(i8*, i8*, ...)
declare i8* @objc_retain(i8*)
declare void @objc_release(i8*)
declare i8* @objc_autorelease(i8*)
declare i8* @objc_explicit_autorelease(i8*)
define hidden %14* @foo(%15* %arg, %16* %arg2) {
bb:
%tmp = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_3725", align 8
%tmp4 = bitcast %15* %arg to i8*
%tmp5 = tail call %18* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %18* (i8*, i8*)*)(i8* %tmp4, i8* %tmp)
%tmp6 = bitcast %18* %tmp5 to i8*
%tmp7 = tail call i8* @objc_retain(i8* %tmp6) nounwind
%tmp8 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_40", align 8
%tmp9 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_4227", align 8
%tmp10 = bitcast %2* %tmp8 to i8*
%tmp11 = tail call %19* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %19* (i8*, i8*)*)(i8* %tmp10, i8* %tmp9)
%tmp12 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_4631", align 8
%tmp13 = bitcast %19* %tmp11 to i8*
%tmp14 = tail call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*, %13*)*)(i8* %tmp13, i8* %tmp12, %13* bitcast (%12* @_unnamed_cfstring_386 to %13*))
%tmp15 = bitcast %16* %arg2 to i8*
%tmp16 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_count" to i8**), align 16
%tmp17 = bitcast i8* %tmp16 to i64 (i8*, %1*)*
%tmp18 = tail call i64 %tmp17(i8* %tmp15, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_count" to %1*))
%tmp19 = icmp eq i64 %tmp18, 0
br i1 %tmp19, label %bb22, label %bb20
bb20: ; preds = %bb
%tmp21 = icmp eq i8 %tmp14, 0
br label %bb25
bb22: ; preds = %bb
%tmp23 = bitcast i8* %tmp7 to %18*
%tmp24 = icmp eq i8 %tmp14, 0
br i1 %tmp24, label %bb46, label %bb25
bb25: ; preds = %bb22, %bb20
%tmp26 = phi i1 [ %tmp21, %bb20 ], [ false, %bb22 ]
%tmp27 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_188", align 8
%tmp28 = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %tmp7, i8* %tmp27)
%tmp29 = tail call i8* @objc_explicit_autorelease(i8* %tmp28) nounwind
%tmp30 = bitcast i8* %tmp29 to %18*
tail call void @objc_release(i8* %tmp7) nounwind
%tmp31 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_389", align 8
%tmp32 = tail call %20* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %20* (i8*, i8*)*)(i8* %tmp29, i8* %tmp31)
%tmp33 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_391", align 8
%tmp34 = bitcast %20* %tmp32 to i8*
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, %16*)*)(i8* %tmp34, i8* %tmp33, %16* %arg2)
br i1 %tmp26, label %bb46, label %bb35
bb35: ; preds = %bb25
%tmp36 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_389", align 8
%tmp37 = tail call %20* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %20* (i8*, i8*)*)(i8* %tmp29, i8* %tmp36)
%tmp38 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_70", align 8
%tmp39 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_393", align 8
%tmp40 = bitcast %2* %tmp38 to i8*
%tmp41 = tail call %21* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %21* (i8*, i8*, i8)*)(i8* %tmp40, i8* %tmp39, i8 signext 1)
%tmp42 = bitcast %21* %tmp41 to i8*
%tmp43 = load %13** @NSPrintHeaderAndFooter, align 8
%tmp44 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_159", align 8
%tmp45 = bitcast %20* %tmp37 to i8*
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i8*, %13*)*)(i8* %tmp45, i8* %tmp44, i8* %tmp42, %13* %tmp43)
br label %bb46
bb46: ; preds = %bb35, %bb25, %bb22
%tmp47 = phi %18* [ %tmp30, %bb35 ], [ %tmp30, %bb25 ], [ %tmp23, %bb22 ]
%tmp48 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_328", align 8
%tmp49 = tail call %22* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %22* (i8*, i8*)*)(i8* %tmp4, i8* %tmp48)
%tmp50 = bitcast %22* %tmp49 to i8*
%tmp51 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_count" to i8**), align 16
%tmp52 = bitcast i8* %tmp51 to i64 (i8*, %1*)*
%tmp53 = tail call i64 %tmp52(i8* %tmp50, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_count" to %1*))
%tmp54 = icmp eq i64 %tmp53, 0
br i1 %tmp54, label %bb55, label %bb57
bb55: ; preds = %bb46
%tmp56 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_395", align 8
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*)*)(i8* %tmp4, i8* %tmp56)
br label %bb57
bb57: ; preds = %bb55, %bb46
%tmp58 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_396", align 8
%tmp59 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_328", align 8
%tmp60 = tail call %22* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %22* (i8*, i8*)*)(i8* %tmp4, i8* %tmp59)
%tmp61 = bitcast %22* %tmp60 to i8*
%tmp62 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to i8**), align 16
%tmp63 = bitcast i8* %tmp62 to i8* (i8*, %1*, i64)*
%tmp64 = tail call i8* %tmp63(i8* %tmp61, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to %1*), i64 0)
%tmp65 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_398", align 8
%tmp66 = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %tmp64, i8* %tmp65)
%tmp67 = bitcast i8* %tmp66 to %23*
%tmp68 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_400", align 8
%tmp69 = bitcast %2* %tmp58 to i8*
%tmp70 = tail call %14* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %14* (i8*, i8*, %23*, %18*)*)(i8* %tmp69, i8* %tmp68, %23* %tmp67, %18* %tmp47)
%tmp71 = bitcast %14* %tmp70 to i8*
; hack to prevent the optimize from using objc_retainAutoreleasedReturnValue.
%tmp71x = getelementptr i8* %tmp71, i64 1
%tmp72 = tail call i8* @objc_retain(i8* %tmp71x) nounwind
%tmp73 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_402", align 8
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i8)*)(i8* %tmp72, i8* %tmp73, i8 signext 1)
%tmp74 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_404", align 8
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i8)*)(i8* %tmp72, i8* %tmp74, i8 signext 1)
%tmp75 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_328", align 8
%tmp76 = tail call %22* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %22* (i8*, i8*)*)(i8* %tmp4, i8* %tmp75)
%tmp77 = bitcast %22* %tmp76 to i8*
%tmp78 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to i8**), align 16
%tmp79 = bitcast i8* %tmp78 to i8* (i8*, %1*, i64)*
%tmp80 = tail call i8* %tmp79(i8* %tmp77, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_objectAtIndex_" to %1*), i64 0)
%tmp81 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_406", align 8
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i64)*)(i8* %tmp80, i8* %tmp81, i64 9223372036854775807)
%tmp82 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_408", align 8
%tmp83 = tail call %24* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %24* (i8*, i8*)*)(i8* %tmp72, i8* %tmp82)
%tmp84 = bitcast %24* %tmp83 to i8*
%tmp85 = tail call i8* @objc_retain(i8* %tmp84) nounwind
%tmp86 = load %2** @"\01L_OBJC_CLASSLIST_REFERENCES_$_409", align 8
%tmp87 = bitcast %2* %tmp86 to i8*
%tmp88 = load i8** bitcast (%0* @"\01l_objc_msgSend_fixup_alloc" to i8**), align 16
%tmp89 = bitcast i8* %tmp88 to i8* (i8*, %1*)*
%tmp90 = tail call i8* %tmp89(i8* %tmp87, %1* bitcast (%0* @"\01l_objc_msgSend_fixup_alloc" to %1*))
%tmp91 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_8", align 8
%tmp92 = tail call i8* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8* (i8*, i8*)*)(i8* %tmp90, i8* %tmp91)
%tmp93 = tail call i8* @objc_explicit_autorelease(i8* %tmp92) nounwind
%tmp94 = bitcast i8* %tmp93 to %25*
%tmp95 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_411", align 8
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, %25*)*)(i8* %tmp85, i8* %tmp95, %25* %tmp94)
tail call void @objc_release(i8* %tmp93) nounwind
%tmp96 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_148", align 8
%tmp97 = tail call signext i8 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i8 (i8*, i8*)*)(i8* %tmp4, i8* %tmp96)
%tmp98 = icmp eq i8 %tmp97, 0
br i1 %tmp98, label %bb99, label %bb104
bb99: ; preds = %bb57
%tmp100 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_413", align 8
%tmp101 = tail call i64 bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to i64 (i8*, i8*)*)(i8* %tmp85, i8* %tmp100)
%tmp102 = or i64 %tmp101, 12
%tmp103 = load i8** @"\01L_OBJC_SELECTOR_REFERENCES_415", align 8
tail call void bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to void (i8*, i8*, i64)*)(i8* %tmp85, i8* %tmp103, i64 %tmp102)
br label %bb104
bb104: ; preds = %bb99, %bb57
Fixed a bug where we were tail calling objc_autorelease causing an object to not be placed into an autorelease pool. The reason that this occurs is that tail calling objc_autorelease eventually tail calls -[NSObject autorelease] which supports fast autorelease. This can cause us to violate the semantic gaurantees of __autoreleasing variables that assignment to an __autoreleasing variables always yields an object that is placed into the innermost autorelease pool. The fix included in this patch works by: 1. In the peephole optimization function OptimizeIndividualFunctions, always remove tail call from objc_autorelease. 2. Whenever we convert to/from an objc_autorelease, set/unset the tail call keyword as appropriate. *NOTE* I also handled the case where objc_autorelease is converted in OptimizeReturns to an autoreleaseRV which still violates the ARC semantics. I will be removing that in a later patch and I wanted to make sure that the tree is in a consistent state vis-a-vis ARC always. Additionally some test cases are provided and all tests that have tail call marked objc_autorelease keywords have been modified so that tail call has been removed. *NOTE* One test fails due to a separate bug that I am going to commit soon. Thus I marked the check line TMP: instead of CHECK: so make check does not fail. llvm-svn: 172287
2013-01-12 09:25:15 +08:00
%tmp105 = call i8* @objc_autorelease(i8* %tmp72) nounwind
The ARC language-specific optimizer. Credit to Dan Gohman. llvm-svn: 133108
2011-06-16 07:37:01 +08:00
%tmp106 = bitcast i8* %tmp105 to %14*
tail call void @objc_release(i8* %tmp85) nounwind
%tmp107 = bitcast %18* %tmp47 to i8*
tail call void @objc_release(i8* %tmp107) nounwind
ret %14* %tmp106
}