mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-01 19:29:22 +00:00
causing it to get into infinite loops when it would widen a load (which can necessarily leave around dead loads). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131847 91177308-0d34-0410-b5e6-96231b3b80d8
166 lines
5.2 KiB
LLVM
166 lines
5.2 KiB
LLVM
; RUN: opt -gvn %s -disable-output
|
|
|
|
; PR5631
|
|
|
|
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-darwin10.0"
|
|
|
|
define i32* @test1(i8* %name, i32 %namelen, i32* %o, i32 %expected_type) nounwind ssp {
|
|
entry:
|
|
br i1 undef, label %if.end13, label %while.body.preheader
|
|
|
|
|
|
if.end13: ; preds = %if.then6
|
|
br label %while.body.preheader
|
|
|
|
while.body.preheader: ; preds = %if.end13, %if.end
|
|
br label %while.body
|
|
|
|
while.body: ; preds = %while.body.backedge, %while.body.preheader
|
|
%o.addr.0 = phi i32* [ undef, %while.body.preheader ], [ %o.addr.0.be, %while.body.backedge ] ; <i32*> [#uses=2]
|
|
br i1 false, label %return.loopexit, label %lor.lhs.false
|
|
|
|
lor.lhs.false: ; preds = %while.body
|
|
%tmp20 = bitcast i32* %o.addr.0 to i32* ; <i32*> [#uses=1]
|
|
%tmp22 = load i32* %tmp20 ; <i32> [#uses=0]
|
|
br i1 undef, label %land.lhs.true24, label %if.end31
|
|
|
|
land.lhs.true24: ; preds = %lor.lhs.false
|
|
%call28 = call i32* @parse_object(i8* undef) nounwind ; <i32*> [#uses=0]
|
|
br i1 undef, label %return.loopexit, label %if.end31
|
|
|
|
if.end31: ; preds = %land.lhs.true24, %lor.lhs.false
|
|
br i1 undef, label %return.loopexit, label %if.end41
|
|
|
|
if.end41: ; preds = %if.end31
|
|
%tmp43 = bitcast i32* %o.addr.0 to i32* ; <i32*> [#uses=1]
|
|
%tmp45 = load i32* %tmp43 ; <i32> [#uses=0]
|
|
br i1 undef, label %if.then50, label %if.else
|
|
|
|
if.then50: ; preds = %if.end41
|
|
%tmp53 = load i32** undef ; <i32*> [#uses=1]
|
|
br label %while.body.backedge
|
|
|
|
if.else: ; preds = %if.end41
|
|
br i1 undef, label %if.then62, label %if.else67
|
|
|
|
if.then62: ; preds = %if.else
|
|
br label %while.body.backedge
|
|
|
|
while.body.backedge: ; preds = %if.then62, %if.then50
|
|
%o.addr.0.be = phi i32* [ %tmp53, %if.then50 ], [ undef, %if.then62 ] ; <i32*> [#uses=1]
|
|
br label %while.body
|
|
|
|
if.else67: ; preds = %if.else
|
|
ret i32* null
|
|
|
|
return.loopexit: ; preds = %if.end31, %land.lhs.true24, %while.body
|
|
ret i32* undef
|
|
}
|
|
|
|
declare i32* @parse_object(i8*)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
%struct.attribute_spec = type { i8*, i32, i32, i8, i8, i8 }
|
|
|
|
@attribute_tables = external global [4 x %struct.attribute_spec*] ; <[4 x %struct.attribute_spec*]*> [#uses=2]
|
|
|
|
define void @test2() nounwind {
|
|
entry:
|
|
br label %bb69.i
|
|
|
|
bb69.i: ; preds = %bb57.i.preheader
|
|
%tmp4 = getelementptr inbounds [4 x %struct.attribute_spec*]* @attribute_tables, i32 0, i32 undef ; <%struct.attribute_spec**> [#uses=1]
|
|
%tmp3 = load %struct.attribute_spec** %tmp4, align 4 ; <%struct.attribute_spec*> [#uses=1]
|
|
br label %bb65.i
|
|
|
|
bb65.i: ; preds = %bb65.i.preheader, %bb64.i
|
|
%storemerge6.i = phi i32 [ 1, %bb64.i ], [ 0, %bb69.i ] ; <i32> [#uses=3]
|
|
%scevgep14 = getelementptr inbounds %struct.attribute_spec* %tmp3, i32 %storemerge6.i, i32 0 ; <i8**> [#uses=1]
|
|
%tmp2 = load i8** %scevgep14, align 4 ; <i8*> [#uses=0]
|
|
%tmp = load %struct.attribute_spec** %tmp4, align 4 ; <%struct.attribute_spec*> [#uses=1]
|
|
%scevgep1516 = getelementptr inbounds %struct.attribute_spec* %tmp, i32 %storemerge6.i, i32 0 ; <i8**> [#uses=0]
|
|
unreachable
|
|
|
|
bb64.i: ; Unreachable
|
|
br label %bb65.i
|
|
|
|
bb66.i: ; Unreachable
|
|
br label %bb69.i
|
|
}
|
|
|
|
|
|
|
|
; rdar://7438974
|
|
|
|
@g = external global i64, align 8
|
|
|
|
define i32* @test3() {
|
|
do.end17.i:
|
|
%tmp18.i = load i7** undef
|
|
%tmp1 = bitcast i7* %tmp18.i to i8*
|
|
br i1 undef, label %do.body36.i, label %if.then21.i
|
|
|
|
if.then21.i:
|
|
%tmp2 = bitcast i7* %tmp18.i to i8*
|
|
ret i32* undef
|
|
|
|
do.body36.i:
|
|
%ivar38.i = load i64* @g
|
|
%tmp3 = bitcast i7* %tmp18.i to i8*
|
|
%add.ptr39.sum.i = add i64 %ivar38.i, 8
|
|
%tmp40.i = getelementptr inbounds i8* %tmp3, i64 %add.ptr39.sum.i
|
|
%tmp4 = bitcast i8* %tmp40.i to i64*
|
|
%tmp41.i = load i64* %tmp4
|
|
br i1 undef, label %if.then48.i, label %do.body57.i
|
|
|
|
if.then48.i:
|
|
%call54.i = call i32 @foo2()
|
|
br label %do.body57.i
|
|
|
|
do.body57.i:
|
|
%tmp58.i = load i7** undef
|
|
%ivar59.i = load i64* @g
|
|
%tmp5 = bitcast i7* %tmp58.i to i8*
|
|
%add.ptr65.sum.i = add i64 %ivar59.i, 8
|
|
%tmp66.i = getelementptr inbounds i8* %tmp5, i64 %add.ptr65.sum.i
|
|
%tmp6 = bitcast i8* %tmp66.i to i64*
|
|
%tmp67.i = load i64* %tmp6
|
|
ret i32* undef
|
|
}
|
|
|
|
declare i32 @foo2()
|
|
|
|
|
|
|
|
define i32 @test4() {
|
|
entry:
|
|
ret i32 0
|
|
|
|
dead:
|
|
%P2 = getelementptr i32 *%P2, i32 52
|
|
%Q2 = getelementptr i32 *%Q2, i32 52
|
|
store i32 4, i32* %P2
|
|
%A = load i32* %Q2
|
|
br i1 true, label %dead, label %dead2
|
|
|
|
dead2:
|
|
ret i32 %A
|
|
}
|
|
|
|
|
|
; PR9841
|
|
define fastcc i8 @test5(i8* %P) nounwind {
|
|
entry:
|
|
%0 = load i8* %P, align 2
|
|
|
|
%Q = getelementptr i8* %P, i32 1
|
|
%1 = load i8* %Q, align 1
|
|
ret i8 %1
|
|
}
|
|
|