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llvm-mirror/test/Transforms/SROA/phi-gep.ll
Stanislav Mekhanoshin 4356e2c329 Fixed assertion in SROA if block has ho successors 
BasicBlock::isLegalToHoistInto() asserts if block does not
have successors. The case is degenarate but assertion still
needs to be avoided.

https://bugs.llvm.org/show_bug.cgi?id=46280

Differential Revision: https://reviews.llvm.org/D81674
2020-06-11 15:15:19 -07:00

458 lines
17 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -sroa < %s | FileCheck %s
%pair = type { i32, i32 }
define i32 @test_sroa_phi_gep(i1 %cond) {
; CHECK-LABEL: @test_sroa_phi_gep(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 2, [[IF_THEN]] ]
; CHECK-NEXT: ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
;
entry:
%a = alloca %pair, align 4
%b = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
store i32 1, i32* %gep_a, align 4
store i32 2, i32* %gep_b, align 4
br i1 %cond, label %if.then, label %end
if.then:
br label %end
end:
%phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
define i32 @test_sroa_phi_gep_non_inbound(i1 %cond) {
; CHECK-LABEL: @test_sroa_phi_gep_non_inbound(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 2, [[IF_THEN]] ]
; CHECK-NEXT: ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
;
entry:
%a = alloca %pair, align 4
%b = alloca %pair, align 4
%gep_a = getelementptr %pair, %pair* %a, i32 0, i32 1
%gep_b = getelementptr %pair, %pair* %b, i32 0, i32 1
store i32 1, i32* %gep_a, align 4
store i32 2, i32* %gep_b, align 4
br i1 %cond, label %if.then, label %end
if.then:
br label %end
end:
%phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
%gep = getelementptr %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
define i32 @test_sroa_phi_gep_undef(i1 %cond) {
; CHECK-LABEL: @test_sroa_phi_gep_undef(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ undef, [[IF_THEN]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
;
entry:
%a = alloca %pair, align 4
br i1 %cond, label %if.then, label %end
if.then:
br label %end
end:
%phi = phi %pair* [ %a, %entry], [ undef, %if.then ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
@g = global %pair zeroinitializer, align 4
define i32 @test_sroa_phi_gep_global(i1 %cond) {
; CHECK-LABEL: @test_sroa_phi_gep_global(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
; CHECK-NEXT: store i32 1, i32* [[GEP_A]], align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ @g, [[IF_THEN]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
;
entry:
%a = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
store i32 1, i32* %gep_a, align 4
br i1 %cond, label %if.then, label %end
if.then:
br label %end
end:
%phi = phi %pair* [ %a, %entry], [ @g, %if.then ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
define i32 @test_sroa_phi_gep_arg_phi_inspt(i1 %cond) {
; CHECK-LABEL: @test_sroa_phi_gep_arg_phi_inspt(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
; CHECK: for:
; CHECK-NEXT: [[PHI_INSPT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
; CHECK-NEXT: [[I]] = add i32 [[PHI_INSPT]], 1
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI_SROA_PHI_SROA_SPECULATED:%.*]] = phi i32 [ 1, [[ENTRY]] ], [ 2, [[FOR]] ]
; CHECK-NEXT: ret i32 [[PHI_SROA_PHI_SROA_SPECULATED]]
;
entry:
%a = alloca %pair, align 4
%b = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
store i32 1, i32* %gep_a, align 4
store i32 2, i32* %gep_b, align 4
br i1 %cond, label %for, label %end
for:
%phi_inspt = phi i32 [ 0, %entry ], [ %i, %for ]
%i = add i32 %phi_inspt, 1
%loop.cond = icmp ult i32 %i, 10
br i1 %loop.cond, label %for, label %end
end:
%phi = phi %pair* [ %a, %entry], [ %b, %for ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
define i32 @test_sroa_phi_gep_phi_inspt(i1 %cond) {
; CHECK-LABEL: @test_sroa_phi_gep_phi_inspt(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
; CHECK-NEXT: [[B:%.*]] = alloca [[PAIR]], align 4
; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[B]], i32 0, i32 1
; CHECK-NEXT: store i32 1, i32* [[GEP_A]], align 4
; CHECK-NEXT: store i32 2, i32* [[GEP_B]], align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
; CHECK: for:
; CHECK-NEXT: [[PHI_IN:%.*]] = phi %pair* [ null, [[ENTRY:%.*]] ], [ [[B]], [[FOR]] ]
; CHECK-NEXT: [[PHI_INSPT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[I:%.*]], [[FOR]] ]
; CHECK-NEXT: [[I]] = add i32 [[PHI_INSPT]], 1
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY]] ], [ [[PHI_IN]], [[FOR]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
;
entry:
%a = alloca %pair, align 4
%b = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
store i32 1, i32* %gep_a, align 4
store i32 2, i32* %gep_b, align 4
br i1 %cond, label %for, label %end
for:
%phi_in = phi %pair * [ null, %entry ], [ %b, %for ]
%phi_inspt = phi i32 [ 0, %entry ], [ %i, %for ]
%i = add i32 %phi_inspt, 1
%loop.cond = icmp ult i32 %i, 10
br i1 %loop.cond, label %for, label %end
end:
%phi = phi %pair* [ %a, %entry], [ %phi_in, %for ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
define i32 @test_sroa_gep_phi_gep(i1 %cond) {
; CHECK-LABEL: @test_sroa_gep_phi_gep(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A_SROA_0:%.*]] = alloca i32, align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
; CHECK: for:
; CHECK-NEXT: [[PHI_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
; CHECK-NEXT: [[PHI:%.*]] = phi i32* [ [[A_SROA_0]], [[ENTRY]] ], [ [[GEP_FOR:%.*]], [[FOR]] ]
; CHECK-NEXT: [[I]] = add i32 [[PHI_I]], 1
; CHECK-NEXT: [[GEP_FOR]] = getelementptr inbounds i32, i32* [[PHI]], i32 0
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI_END:%.*]] = phi i32* [ [[A_SROA_0]], [[ENTRY]] ], [ [[PHI]], [[FOR]] ]
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[PHI_END]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
;
entry:
%a = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
br i1 %cond, label %for, label %end
for:
%phi_i = phi i32 [ 0, %entry ], [ %i, %for ]
%phi = phi i32* [ %gep_a, %entry], [ %gep_for, %for ]
%i = add i32 %phi_i, 1
%gep_for = getelementptr inbounds i32, i32* %phi, i32 0
%loop.cond = icmp ult i32 %i, 10
br i1 %loop.cond, label %for, label %end
end:
%phi_end = phi i32* [ %gep_a, %entry], [ %phi, %for ]
%load = load i32, i32* %phi_end, align 4
ret i32 %load
}
define i32 @test_sroa_invoke_phi_gep(i1 %cond) personality i32 (...)* @__gxx_personality_v0 {
; CHECK-LABEL: @test_sroa_invoke_phi_gep(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[CALL:%.*]], label [[END:%.*]]
; CHECK: call:
; CHECK-NEXT: [[B:%.*]] = invoke %pair* @foo()
; CHECK-NEXT: to label [[END]] unwind label [[INVOKE_CATCH:%.*]]
; CHECK: end:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[CALL]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 0, i32 1
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
; CHECK: invoke_catch:
; CHECK-NEXT: [[RES:%.*]] = landingpad { i8*, i32 }
; CHECK-NEXT: catch i8* null
; CHECK-NEXT: ret i32 0
;
entry:
%a = alloca %pair, align 4
br i1 %cond, label %call, label %end
call:
%b = invoke %pair* @foo()
to label %end unwind label %invoke_catch
end:
%phi = phi %pair* [ %a, %entry], [ %b, %call ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 0, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
invoke_catch:
%res = landingpad { i8*, i32 }
catch i8* null
ret i32 0
}
define i32 @test_sroa_phi_gep_nonconst_idx(i1 %cond, i32 %idx) {
; CHECK-LABEL: @test_sroa_phi_gep_nonconst_idx(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = alloca [[PAIR:%.*]], align 4
; CHECK-NEXT: [[B:%.*]] = alloca [[PAIR]], align 4
; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[A]], i32 0, i32 1
; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[B]], i32 0, i32 1
; CHECK-NEXT: store i32 1, i32* [[GEP_A]], align 4
; CHECK-NEXT: store i32 2, i32* [[GEP_B]], align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[IF_THEN:%.*]], label [[END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[A]], [[ENTRY:%.*]] ], [ [[B]], [[IF_THEN]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i32 [[IDX:%.*]], i32 1
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[GEP]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
;
entry:
%a = alloca %pair, align 4
%b = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
%gep_b = getelementptr inbounds %pair, %pair* %b, i32 0, i32 1
store i32 1, i32* %gep_a, align 4
store i32 2, i32* %gep_b, align 4
br i1 %cond, label %if.then, label %end
if.then:
br label %end
end:
%phi = phi %pair* [ %a, %entry], [ %b, %if.then ]
%gep = getelementptr inbounds %pair, %pair* %phi, i32 %idx, i32 1
%load = load i32, i32* %gep, align 4
ret i32 %load
}
define void @test_sroa_gep_phi_select_other_block() {
; CHECK-LABEL: @test_sroa_gep_phi_select_other_block(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [[PAIR:%.*]], align 8
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[ALLOCA]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[WHILE_BODY]] ]
; CHECK-NEXT: [[SELECT]] = select i1 undef, %pair* [[PHI]], %pair* undef
; CHECK-NEXT: br i1 undef, label [[EXIT:%.*]], label [[WHILE_BODY]]
; CHECK: exit:
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i64 1
; CHECK-NEXT: unreachable
;
entry:
%alloca = alloca %pair, align 8
br label %while.body
while.body:
%phi = phi %pair* [ %alloca, %entry ], [ %select, %while.body ]
%select = select i1 undef, %pair* %phi, %pair* undef
br i1 undef, label %exit, label %while.body
exit:
%gep = getelementptr inbounds %pair, %pair* %phi, i64 1
unreachable
}
define void @test_sroa_gep_phi_select_same_block() {
; CHECK-LABEL: @test_sroa_gep_phi_select_same_block(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [[PAIR:%.*]], align 8
; CHECK-NEXT: br label [[WHILE_BODY:%.*]]
; CHECK: while.body:
; CHECK-NEXT: [[PHI:%.*]] = phi %pair* [ [[ALLOCA]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[WHILE_BODY]] ]
; CHECK-NEXT: [[SELECT]] = select i1 undef, %pair* [[PHI]], %pair* undef
; CHECK-NEXT: [[PHI_SROA_GEP:%.*]] = getelementptr inbounds [[PAIR]], %pair* [[PHI]], i64 1
; CHECK-NEXT: [[SELECT_SROA_SEL:%.*]] = select i1 undef, %pair* [[PHI_SROA_GEP]], %pair* undef
; CHECK-NEXT: br i1 undef, label [[EXIT:%.*]], label [[WHILE_BODY]]
; CHECK: exit:
; CHECK-NEXT: unreachable
;
entry:
%alloca = alloca %pair, align 8
br label %while.body
while.body:
%phi = phi %pair* [ %alloca, %entry ], [ %select, %while.body ]
%select = select i1 undef, %pair* %phi, %pair* undef
%gep = getelementptr inbounds %pair, %pair* %select, i64 1
br i1 undef, label %exit, label %while.body
exit:
unreachable
}
define i32 @test_sroa_gep_cast_phi_gep(i1 %cond) {
; CHECK-LABEL: @test_sroa_gep_cast_phi_gep(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A_SROA_0:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A_SROA_0_0_GEP_A_CAST_TO_FLOAT_SROA_CAST:%.*]] = bitcast i32* [[A_SROA_0]] to float*
; CHECK-NEXT: [[A_SROA_0_0_GEP_A_CAST_TO_FLOAT_SROA_CAST2:%.*]] = bitcast i32* [[A_SROA_0]] to float*
; CHECK-NEXT: [[A_SROA_0_0_GEP_SROA_CAST:%.*]] = bitcast i32* [[A_SROA_0]] to float*
; CHECK-NEXT: store i32 1065353216, i32* [[A_SROA_0]], align 4
; CHECK-NEXT: br i1 [[COND:%.*]], label [[FOR:%.*]], label [[END:%.*]]
; CHECK: for:
; CHECK-NEXT: [[PHI_I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I:%.*]], [[FOR]] ]
; CHECK-NEXT: [[PHI:%.*]] = phi float* [ [[A_SROA_0_0_GEP_A_CAST_TO_FLOAT_SROA_CAST]], [[ENTRY]] ], [ [[GEP_FOR_CAST_TO_FLOAT:%.*]], [[FOR]] ]
; CHECK-NEXT: [[PHI_SROA_PHI:%.*]] = phi float* [ [[A_SROA_0_0_GEP_SROA_CAST]], [[ENTRY]] ], [ [[GEP_FOR_CAST_TO_FLOAT_SROA_GEP:%.*]], [[FOR]] ]
; CHECK-NEXT: [[I]] = add i32 [[PHI_I]], 1
; CHECK-NEXT: [[GEP_FOR_CAST:%.*]] = bitcast float* [[PHI_SROA_PHI]] to i32*
; CHECK-NEXT: [[GEP_FOR_CAST_TO_FLOAT]] = bitcast i32* [[GEP_FOR_CAST]] to float*
; CHECK-NEXT: [[GEP_FOR_CAST_TO_FLOAT_SROA_GEP]] = getelementptr inbounds float, float* [[GEP_FOR_CAST_TO_FLOAT]], i32 0
; CHECK-NEXT: [[LOOP_COND:%.*]] = icmp ult i32 [[I]], 10
; CHECK-NEXT: br i1 [[LOOP_COND]], label [[FOR]], label [[END]]
; CHECK: end:
; CHECK-NEXT: [[PHI_END:%.*]] = phi float* [ [[A_SROA_0_0_GEP_A_CAST_TO_FLOAT_SROA_CAST2]], [[ENTRY]] ], [ [[PHI]], [[FOR]] ]
; CHECK-NEXT: [[PHI_END_1:%.*]] = bitcast float* [[PHI_END]] to i32*
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[PHI_END_1]], align 4
; CHECK-NEXT: ret i32 [[LOAD]]
;
entry:
%a = alloca %pair, align 4
%gep_a = getelementptr inbounds %pair, %pair* %a, i32 0, i32 1
%gep_a_cast_to_float = bitcast i32* %gep_a to float*
store float 1.0, float* %gep_a_cast_to_float, align 4
br i1 %cond, label %for, label %end
for:
%phi_i = phi i32 [ 0, %entry ], [ %i, %for ]
%phi = phi float* [ %gep_a_cast_to_float, %entry], [ %gep_for_cast_to_float, %for ]
%i = add i32 %phi_i, 1
%gep_for = getelementptr inbounds float, float* %phi, i32 0
%gep_for_cast = bitcast float* %gep_for to i32*
%gep_for_cast_to_float = bitcast i32* %gep_for_cast to float*
%loop.cond = icmp ult i32 %i, 10
br i1 %loop.cond, label %for, label %end
end:
%phi_end = phi float* [ %gep_a_cast_to_float, %entry], [ %phi, %for ]
%phi_end.1 = bitcast float* %phi_end to i32*
%load = load i32, i32* %phi_end.1, align 4
ret i32 %load
}
define void @unreachable_term() {
; CHECK-LABEL: @unreachable_term(
; CHECK-NEXT: [[A_SROA_0:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A_SROA_0_0_A_SROA_CAST1:%.*]] = bitcast i32* [[A_SROA_0]] to [3 x i32]*
; CHECK-NEXT: unreachable
; CHECK: bb1:
; CHECK-NEXT: br label [[BB1_I:%.*]]
; CHECK: bb1.i:
; CHECK-NEXT: [[PHI:%.*]] = phi [3 x i32]* [ [[A_SROA_0_0_A_SROA_CAST1]], [[BB1:%.*]] ], [ null, [[BB1_I]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr [3 x i32], [3 x i32]* [[PHI]], i64 0, i64 0
; CHECK-NEXT: store i32 0, i32* [[GEP]], align 1
; CHECK-NEXT: br i1 undef, label [[BB1_I]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: br label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: ret void
;
%a = alloca [3 x i32], align 1
unreachable
bb1:
br label %bb1.i
bb1.i:
%phi = phi [3 x i32]* [ %a, %bb1 ], [ null, %bb1.i ]
%gep = getelementptr [3 x i32], [3 x i32]* %phi, i64 0, i64 0
store i32 0, i32* %gep, align 1
br i1 undef, label %bb1.i, label %exit
exit:
br label %bb2
bb2:
ret void
}
declare %pair* @foo()
declare i32 @__gxx_personality_v0(...)
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