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; Test that the inliner doesn't leave around dead allocas, and that it folds
; uncond branches away after it is done specializing.
; RUN: opt < %s -inline -S | FileCheck %s
@A = weak global i32 0 ; <i32*> [#uses=1]
@B = weak global i32 0 ; <i32*> [#uses=1]
@C = weak global i32 0 ; <i32*> [#uses=1]
define internal fastcc void @foo(i32 %X) {
entry:
%ALL = alloca i32, align 4 ; <i32*> [#uses=1]
%tmp1 = and i32 %X, 1 ; <i32> [#uses=1]
%tmp1.upgrd.1 = icmp eq i32 %tmp1, 0 ; <i1> [#uses=1]
br i1 %tmp1.upgrd.1, label %cond_next, label %cond_true
cond_true: ; preds = %entry
store i32 1, i32* @A
br label %cond_next
cond_next: ; preds = %cond_true, %entry
%tmp4 = and i32 %X, 2 ; <i32> [#uses=1]
%tmp4.upgrd.2 = icmp eq i32 %tmp4, 0 ; <i1> [#uses=1]
br i1 %tmp4.upgrd.2, label %cond_next7, label %cond_true5
cond_true5: ; preds = %cond_next
store i32 1, i32* @B
br label %cond_next7
cond_next7: ; preds = %cond_true5, %cond_next
%tmp10 = and i32 %X, 4 ; <i32> [#uses=1]
%tmp10.upgrd.3 = icmp eq i32 %tmp10, 0 ; <i1> [#uses=1]
br i1 %tmp10.upgrd.3, label %cond_next13, label %cond_true11
cond_true11: ; preds = %cond_next7
store i32 1, i32* @C
br label %cond_next13
cond_next13: ; preds = %cond_true11, %cond_next7
%tmp16 = and i32 %X, 8 ; <i32> [#uses=1]
%tmp16.upgrd.4 = icmp eq i32 %tmp16, 0 ; <i1> [#uses=1]
br i1 %tmp16.upgrd.4, label %UnifiedReturnBlock, label %cond_true17
cond_true17: ; preds = %cond_next13
call void @ext( i32* %ALL )
ret void
UnifiedReturnBlock: ; preds = %cond_next13
ret void
}
declare void @ext(i32*)
define void @test() {
; CHECK-LABEL: @test(
; CHECK-NOT: ret
;
; FIXME: This should be a CHECK-NOT, but currently we have a bug that causes us
; to not nuke unused allocas.
; CHECK: alloca
; CHECK-NOT: ret
;
; No branches should survive the inliner's cleanup.
; CHECK-NOT: br
; CHECK: ret void
entry:
tail call fastcc void @foo( i32 1 )
tail call fastcc void @foo( i32 2 )
tail call fastcc void @foo( i32 3 )
tail call fastcc void @foo( i32 8 )
ret void
}
declare void @f(i32 %x)
define void @inner2(i32 %x, i32 %y, i32 %z, i1 %b) {
entry:
%cmp1 = icmp ne i32 %x, 0
br i1 %cmp1, label %then1, label %end1
then1:
call void @f(i32 %x)
br label %end1
end1:
%x2 = and i32 %x, %z
%cmp2 = icmp sgt i32 %x2, 1
br i1 %cmp2, label %then2, label %end2
then2:
call void @f(i32 %x2)
br label %end2
end2:
%y2 = or i32 %y, %z
%cmp3 = icmp sgt i32 %y2, 0
br i1 %cmp3, label %then3, label %end3
then3:
call void @f(i32 %y2)
br label %end3
end3:
br i1 %b, label %end3.1, label %end3.2
end3.1:
%x3.1 = or i32 %x, 10
br label %end3.3
end3.2:
%x3.2 = or i32 %x, 10
br label %end3.3
end3.3:
%x3.3 = phi i32 [ %x3.1, %end3.1 ], [ %x3.2, %end3.2 ]
%cmp4 = icmp slt i32 %x3.3, 1
br i1 %cmp4, label %then4, label %end4
then4:
call void @f(i32 %x3.3)
br label %end4
end4:
ret void
}
define void @outer2(i32 %z, i1 %b) {
; Ensure that after inlining, none of the blocks with a call to @f actually
; make it through inlining.
; CHECK-LABEL: define void @outer2(
; CHECK-NOT: call
; CHECK: ret void
entry:
call void @inner2(i32 0, i32 -1, i32 %z, i1 %b)
ret void
}
define void @PR12470_inner(i16 signext %p1) nounwind uwtable {
entry:
br i1 undef, label %cond.true, label %cond.false
cond.true:
br label %cond.end
cond.false:
%conv = sext i16 %p1 to i32
br label %cond.end
cond.end:
%cond = phi i32 [ undef, %cond.true ], [ 0, %cond.false ]
%tobool = icmp eq i32 %cond, 0
br i1 %tobool, label %if.end5, label %if.then
if.then:
ret void
if.end5:
ret void
}
define void @PR12470_outer() {
; This previously crashed during inliner cleanup and folding inner return
; instructions. Check that we don't crash and we produce a function with a single
; return instruction due to merging the returns of the inlined function.
; CHECK-LABEL: define void @PR12470_outer(
; CHECK-NOT: call
; CHECK: ret void
; CHECK-NOT: ret void
; CHECK: }
entry:
call void @PR12470_inner(i16 signext 1)
ret void
}
define void @crasher_inner() nounwind uwtable {
entry:
br i1 false, label %for.end28, label %for.body6
for.body6:
br i1 undef, label %for.body6, label %for.cond12.for.inc26_crit_edge
for.cond12.for.inc26_crit_edge:
br label %for.body6.1
for.end28:
ret void
for.body6.1:
br i1 undef, label %for.body6.1, label %for.cond12.for.inc26_crit_edge.1
for.cond12.for.inc26_crit_edge.1:
br label %for.body6.2
for.body6.2:
br i1 undef, label %for.body6.2, label %for.cond12.for.inc26_crit_edge.2
for.cond12.for.inc26_crit_edge.2:
br label %for.end28
}
define void @crasher_outer() {
; CHECK-LABEL: @crasher_outer(
; CHECK-NOT: call
; CHECK: ret void
; CHECK-NOT: ret
; CHECK: }
entry:
tail call void @crasher_inner()
ret void
}
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