; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=instcombine -instcombine-infinite-loop-threshold=3 -S < %s | FileCheck %s
%struct1 = type { %struct2*, i32, i32, i32 }
%struct2 = type { i32, i32 }
%struct3 = type { i32, %struct4, %struct4 }
%struct4 = type { %struct2, %struct2 }
define i32 @test1(%struct1* %dm, i1 %tmp4, i64 %tmp9, i64 %tmp19) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = getelementptr inbounds [[STRUCT1:%.*]], %struct1* [[DM:%.*]], i64 0, i32 0
; CHECK-NEXT: [[TMP1:%.*]] = load %struct2*, %struct2** [[TMP]], align 8
; CHECK-NEXT: br i1 [[TMP4:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [[STRUCT2:%.*]], %struct2* [[TMP1]], i64 [[TMP9:%.*]], i32 0
; CHECK-NEXT: store i32 0, i32* [[TMP11]], align 4
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds [[STRUCT2]], %struct2* [[TMP1]], i64 [[TMP19:%.*]], i32 0
; CHECK-NEXT: store i32 0, i32* [[TMP21]], align 4
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ [[TMP9]], [[BB1]] ], [ [[TMP19]], [[BB2]] ]
; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT2]], %struct2* [[TMP1]], i64 [[TMP0]], i32 1
; CHECK-NEXT: [[TMP25:%.*]] = load i32, i32* [[TMP24]], align 4
; CHECK-NEXT: ret i32 [[TMP25]]
;
bb:
%tmp = getelementptr inbounds %struct1, %struct1* %dm, i64 0, i32 0
%tmp1 = load %struct2*, %struct2** %tmp, align 8
br i1 %tmp4, label %bb1, label %bb2
bb1:
%tmp10 = getelementptr inbounds %struct2, %struct2* %tmp1, i64 %tmp9
%tmp11 = getelementptr inbounds %struct2, %struct2* %tmp10, i64 0, i32 0
store i32 0, i32* %tmp11, align 4
br label %bb3
bb2:
%tmp20 = getelementptr inbounds %struct2, %struct2* %tmp1, i64 %tmp19
%tmp21 = getelementptr inbounds %struct2, %struct2* %tmp20, i64 0, i32 0
store i32 0, i32* %tmp21, align 4
br label %bb3
bb3:
%phi = phi %struct2* [ %tmp10, %bb1 ], [ %tmp20, %bb2 ]
%tmp24 = getelementptr inbounds %struct2, %struct2* %phi, i64 0, i32 1
%tmp25 = load i32, i32* %tmp24, align 4
ret i32 %tmp25
}
define i32 @test2(%struct1* %dm, i1 %tmp4, i64 %tmp9, i64 %tmp19) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = getelementptr inbounds [[STRUCT1:%.*]], %struct1* [[DM:%.*]], i64 0, i32 0
; CHECK-NEXT: [[TMP1:%.*]] = load %struct2*, %struct2** [[TMP]], align 8
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [[STRUCT2:%.*]], %struct2* [[TMP1]], i64 [[TMP9:%.*]], i32 0
; CHECK-NEXT: store i32 0, i32* [[TMP11]], align 4
; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds [[STRUCT2]], %struct2* [[TMP1]], i64 [[TMP19:%.*]], i32 0
; CHECK-NEXT: store i32 0, i32* [[TMP21]], align 4
; CHECK-NEXT: [[TMP24:%.*]] = getelementptr inbounds [[STRUCT2]], %struct2* [[TMP1]], i64 [[TMP9]], i32 1
; CHECK-NEXT: [[TMP25:%.*]] = load i32, i32* [[TMP24]], align 4
; CHECK-NEXT: ret i32 [[TMP25]]
;
bb:
%tmp = getelementptr inbounds %struct1, %struct1* %dm, i64 0, i32 0
%tmp1 = load %struct2*, %struct2** %tmp, align 8
%tmp10 = getelementptr inbounds %struct2, %struct2* %tmp1, i64 %tmp9
%tmp11 = getelementptr inbounds %struct2, %struct2* %tmp10, i64 0, i32 0
store i32 0, i32* %tmp11, align 4
%tmp20 = getelementptr inbounds %struct2, %struct2* %tmp1, i64 %tmp19
%tmp21 = getelementptr inbounds %struct2, %struct2* %tmp20, i64 0, i32 0
store i32 0, i32* %tmp21, align 4
%tmp24 = getelementptr inbounds %struct2, %struct2* %tmp10, i64 0, i32 1
%tmp25 = load i32, i32* %tmp24, align 4
ret i32 %tmp25
}
; Check that instcombine doesn't insert GEPs before landingpad.
define i32 @test3(%struct3* %dm, i1 %tmp4, i64 %tmp9, i64 %tmp19, i64 %tmp20, i64 %tmp21) personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: bb:
; CHECK-NEXT: br i1 [[TMP4:%.*]], label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [[STRUCT3:%.*]], %struct3* [[DM:%.*]], i64 [[TMP19:%.*]], i32 1, i32 0, i32 0
; CHECK-NEXT: store i32 0, i32* [[TMP11]], align 4
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [[STRUCT3]], %struct3* [[DM]], i64 [[TMP20:%.*]], i32 1, i32 0, i32 1
; CHECK-NEXT: store i32 0, i32* [[TMP12]], align 4
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ [[TMP19]], [[BB1]] ], [ [[TMP20]], [[BB2]] ]
; CHECK-NEXT: [[TMP22:%.*]] = invoke i32 @foo1(i32 11)
; CHECK-NEXT: to label [[BB4:%.*]] unwind label [[BB5:%.*]]
; CHECK: bb4:
; CHECK-NEXT: ret i32 0
; CHECK: bb5:
; CHECK-NEXT: [[TMP27:%.*]] = landingpad { i8*, i32 }
; CHECK-NEXT: catch i8* bitcast (i8** @_ZTIi to i8*)
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[STRUCT3]], %struct3* [[DM]], i64 [[TMP0]], i32 1
; CHECK-NEXT: [[TMP35:%.*]] = getelementptr inbounds [[STRUCT4:%.*]], %struct4* [[TMP1]], i64 [[TMP21:%.*]], i32 1, i32 1
; CHECK-NEXT: [[TMP25:%.*]] = load i32, i32* [[TMP35]], align 4
; CHECK-NEXT: ret i32 [[TMP25]]
;
bb:
%tmp = getelementptr inbounds %struct3, %struct3* %dm, i64 0
br i1 %tmp4, label %bb1, label %bb2
bb1:
%tmp1 = getelementptr inbounds %struct3, %struct3* %tmp, i64 %tmp19, i32 1
%tmp11 = getelementptr inbounds %struct4, %struct4* %tmp1, i64 0, i32 0, i32 0
store i32 0, i32* %tmp11, align 4
br label %bb3
bb2:
%tmp2 = getelementptr inbounds %struct3, %struct3* %tmp, i64 %tmp20, i32 1
%tmp12 = getelementptr inbounds %struct4, %struct4* %tmp2, i64 0, i32 0, i32 1
store i32 0, i32* %tmp12, align 4
br label %bb3
bb3:
%phi = phi %struct4* [ %tmp1, %bb1 ], [ %tmp2, %bb2 ]
%tmp22 = invoke i32 @foo1(i32 11) to label %bb4 unwind label %bb5
bb4:
ret i32 0
bb5:
%tmp27 = landingpad { i8*, i32 } catch i8* bitcast (i8** @_ZTIi to i8*)
%tmp34 = getelementptr inbounds %struct4, %struct4* %phi, i64 %tmp21, i32 1
%tmp35 = getelementptr inbounds %struct2, %struct2* %tmp34, i64 0, i32 1
%tmp25 = load i32, i32* %tmp35, align 4
ret i32 %tmp25
}
@_ZTIi = external constant i8*
declare i32 @__gxx_personality_v0(...)
declare i32 @foo1(i32)
; Check that instcombine doesn't fold GEPs into themselves through a loop
; back-edge.
define i8* @test4(i32 %value, i8* %buffer) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[VALUE:%.*]], 127
; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_HEADER:%.*]], label [[EXIT:%.*]]
; CHECK: loop.header:
; CHECK-NEXT: br label [[LOOP_BODY:%.*]]
; CHECK: loop.body:
; CHECK-NEXT: [[BUFFER_PN:%.*]] = phi i8* [ [[BUFFER:%.*]], [[LOOP_HEADER]] ], [ [[LOOPPTR:%.*]], [[LOOP_BODY]] ]
; CHECK-NEXT: [[NEWVAL:%.*]] = phi i32 [ [[VALUE]], [[LOOP_HEADER]] ], [ [[SHR:%.*]], [[LOOP_BODY]] ]
; CHECK-NEXT: [[LOOPPTR]] = getelementptr inbounds i8, i8* [[BUFFER_PN]], i64 1
; CHECK-NEXT: [[SHR]] = lshr i32 [[NEWVAL]], 7
; CHECK-NEXT: [[CMP2:%.*]] = icmp ugt i32 [[NEWVAL]], 16383
; CHECK-NEXT: br i1 [[CMP2]], label [[LOOP_BODY]], label [[LOOP_EXIT:%.*]]
; CHECK: loop.exit:
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[TMP0:%.*]] = phi i8* [ [[LOOPPTR]], [[LOOP_EXIT]] ], [ [[BUFFER]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[INCPTR3:%.*]] = getelementptr inbounds i8, i8* [[TMP0]], i64 2
; CHECK-NEXT: ret i8* [[INCPTR3]]
;
entry:
%incptr = getelementptr inbounds i8, i8* %buffer, i64 1
%cmp = icmp ugt i32 %value, 127
br i1 %cmp, label %loop.header, label %exit
loop.header:
br label %loop.body
loop.body:
%loopptr = phi i8* [ %incptr, %loop.header ], [ %incptr2, %loop.body ]
%newval = phi i32 [ %value, %loop.header ], [ %shr, %loop.body ]
%shr = lshr i32 %newval, 7
%incptr2 = getelementptr inbounds i8, i8* %loopptr, i64 1
%cmp2 = icmp ugt i32 %shr, 127
br i1 %cmp2, label %loop.body, label %loop.exit
loop.exit:
%exitptr = phi i8* [ %incptr2, %loop.body ]
br label %exit
exit:
%ptr2 = phi i8* [ %exitptr, %loop.exit ], [ %incptr, %entry ]
%incptr3 = getelementptr inbounds i8, i8* %ptr2, i64 1
ret i8* %incptr3
}
@.str.4 = external unnamed_addr constant [100 x i8], align 1
; Instcombine shouldn't add new PHI nodes while folding GEPs if that will leave
; old PHI nodes behind as this is not clearly beneficial.
define void @test5(i16 *%idx, i8 **%in) #0 {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = load i8*, i8** [[IN:%.*]], align 8
; CHECK-NEXT: [[INCDEC_PTR:%.*]] = getelementptr inbounds i8, i8* [[TMP0]], i64 1
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[INCDEC_PTR]], align 1
; CHECK-NEXT: [[CMP23:%.*]] = icmp eq i8 [[TMP1]], 54
; CHECK-NEXT: br i1 [[CMP23]], label [[WHILE_COND:%.*]], label [[IF_THEN_25:%.*]]
; CHECK: if.then.25:
; CHECK-NEXT: call void @g(i8* getelementptr inbounds ([100 x i8], [100 x i8]* @.str.4, i64 0, i64 0))
; CHECK-NEXT: br label [[WHILE_COND]]
; CHECK: while.cond:
; CHECK-NEXT: [[PTR:%.*]] = phi i8* [ [[INCDEC_PTR]], [[ENTRY:%.*]] ], [ [[INCDEC_PTR32:%.*]], [[WHILE_BODY:%.*]] ], [ [[INCDEC_PTR]], [[IF_THEN_25]] ]
; CHECK-NEXT: [[TMP2:%.*]] = load i8, i8* [[PTR]], align 1
; CHECK-NEXT: [[AND:%.*]] = and i8 [[TMP2]], 64
; CHECK-NEXT: [[LNOT:%.*]] = icmp eq i8 [[AND]], 0
; CHECK-NEXT: br i1 [[LNOT]], label [[WHILE_BODY]], label [[WHILE_COND_33:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[INCDEC_PTR32]] = getelementptr inbounds i8, i8* [[PTR]], i64 1
; CHECK-NEXT: br label [[WHILE_COND]]
; CHECK: while.cond.33:
; CHECK-NEXT: [[INCDEC_PTR34:%.*]] = getelementptr inbounds i8, i8* [[PTR]], i64 1
; CHECK-NEXT: br label [[WHILE_COND_57:%.*]]
; CHECK: while.cond.57:
; CHECK-NEXT: [[TMP3:%.*]] = load i8, i8* [[INCDEC_PTR34]], align 1
; CHECK-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64
; CHECK-NEXT: [[ARRAYIDX61:%.*]] = getelementptr inbounds i16, i16* [[IDX:%.*]], i64 [[TMP4]]
; CHECK-NEXT: [[TMP5:%.*]] = load i16, i16* [[ARRAYIDX61]], align 2
; CHECK-NEXT: [[AND63:%.*]] = and i16 [[TMP5]], 2048
; CHECK-NEXT: [[TOBOOL64:%.*]] = icmp eq i16 [[AND63]], 0
; CHECK-NEXT: br i1 [[TOBOOL64]], label [[WHILE_COND_73:%.*]], label [[WHILE_COND_57]]
; CHECK: while.cond.73:
; CHECK-NEXT: br label [[WHILE_COND_73]]
;
entry:
%0 = load i8*, i8** %in
%incdec.ptr = getelementptr inbounds i8, i8* %0, i32 1
%1 = load i8, i8* %incdec.ptr, align 1
%cmp23 = icmp eq i8 %1, 54
br i1 %cmp23, label %while.cond, label %if.then.25
if.then.25:
call void @g(i8* getelementptr inbounds ([100 x i8], [100 x i8]* @.str.4, i32 0, i32 0))
br label %while.cond
while.cond:
%Ptr = phi i8* [ %incdec.ptr, %entry ], [ %incdec.ptr32, %while.body], [%incdec.ptr, %if.then.25 ]
%2 = load i8, i8* %Ptr
%and = and i8 %2, 64
%lnot = icmp eq i8 %and, 0
br i1 %lnot, label %while.body, label %while.cond.33
while.body:
%incdec.ptr32 = getelementptr inbounds i8, i8* %Ptr, i32 1
br label %while.cond
while.cond.33:
%incdec.ptr34 = getelementptr inbounds i8, i8* %Ptr, i32 1
br label %while.cond.57
while.cond.57:
%3 = load i8, i8* %incdec.ptr34, align 1
%conv59 = zext i8 %3 to i32
%arrayidx61 = getelementptr inbounds i16, i16* %idx, i32 %conv59
%4 = load i16, i16* %arrayidx61, align 2
%and63 = and i16 %4, 2048
%tobool64 = icmp eq i16 %and63, 0
br i1 %tobool64, label %while.cond.73, label %while.cond.57
while.cond.73:
br label %while.cond.73
}
declare void @g(i8*)