1 ; Test that the inliner doesn't leave around dead allocas, and that it folds
2 ; uncond branches away after it is done specializing.
4 ; RUN: opt < %s -inline -S | FileCheck %s
6 @A = weak global i32 0 ; <i32*> [#uses=1]
7 @B = weak global i32 0 ; <i32*> [#uses=1]
8 @C = weak global i32 0 ; <i32*> [#uses=1]
10 define internal fastcc void @foo(i32 %X) {
12 %ALL = alloca i32, align 4 ; <i32*> [#uses=1]
13 %tmp1 = and i32 %X, 1 ; <i32> [#uses=1]
14 %tmp1.upgrd.1 = icmp eq i32 %tmp1, 0 ; <i1> [#uses=1]
15 br i1 %tmp1.upgrd.1, label %cond_next, label %cond_true
17 cond_true: ; preds = %entry
21 cond_next: ; preds = %cond_true, %entry
22 %tmp4 = and i32 %X, 2 ; <i32> [#uses=1]
23 %tmp4.upgrd.2 = icmp eq i32 %tmp4, 0 ; <i1> [#uses=1]
24 br i1 %tmp4.upgrd.2, label %cond_next7, label %cond_true5
26 cond_true5: ; preds = %cond_next
30 cond_next7: ; preds = %cond_true5, %cond_next
31 %tmp10 = and i32 %X, 4 ; <i32> [#uses=1]
32 %tmp10.upgrd.3 = icmp eq i32 %tmp10, 0 ; <i1> [#uses=1]
33 br i1 %tmp10.upgrd.3, label %cond_next13, label %cond_true11
35 cond_true11: ; preds = %cond_next7
39 cond_next13: ; preds = %cond_true11, %cond_next7
40 %tmp16 = and i32 %X, 8 ; <i32> [#uses=1]
41 %tmp16.upgrd.4 = icmp eq i32 %tmp16, 0 ; <i1> [#uses=1]
42 br i1 %tmp16.upgrd.4, label %UnifiedReturnBlock, label %cond_true17
44 cond_true17: ; preds = %cond_next13
45 call void @ext( i32* %ALL )
48 UnifiedReturnBlock: ; preds = %cond_next13
52 declare void @ext(i32*)
58 ; FIXME: This should be a CHECK-NOT, but currently we have a bug that causes us
59 ; to not nuke unused allocas.
63 ; No branches should survive the inliner's cleanup.
68 tail call fastcc void @foo( i32 1 )
69 tail call fastcc void @foo( i32 2 )
70 tail call fastcc void @foo( i32 3 )
71 tail call fastcc void @foo( i32 8 )
75 declare void @f(i32 %x)
77 define void @inner2(i32 %x, i32 %y, i32 %z, i1 %b) {
79 %cmp1 = icmp ne i32 %x, 0
80 br i1 %cmp1, label %then1, label %end1
88 %cmp2 = icmp sgt i32 %x2, 1
89 br i1 %cmp2, label %then2, label %end2
97 %cmp3 = icmp sgt i32 %y2, 0
98 br i1 %cmp3, label %then3, label %end3
101 call void @f(i32 %y2)
105 br i1 %b, label %end3.1, label %end3.2
108 %x3.1 = or i32 %x, 10
112 %x3.2 = or i32 %x, 10
116 %x3.3 = phi i32 [ %x3.1, %end3.1 ], [ %x3.2, %end3.2 ]
117 %cmp4 = icmp slt i32 %x3.3, 1
118 br i1 %cmp4, label %then4, label %end4
121 call void @f(i32 %x3.3)
128 define void @outer2(i32 %z, i1 %b) {
129 ; Ensure that after inlining, none of the blocks with a call to @f actually
130 ; make it through inlining.
131 ; CHECK: define void @outer2
136 call void @inner2(i32 0, i32 -1, i32 %z, i1 %b)
140 define void @PR12470_inner(i16 signext %p1) nounwind uwtable {
142 br i1 undef, label %cond.true, label %cond.false
148 %conv = sext i16 %p1 to i32
152 %cond = phi i32 [ undef, %cond.true ], [ 0, %cond.false ]
153 %tobool = icmp eq i32 %cond, 0
154 br i1 %tobool, label %if.end5, label %if.then
163 define void @PR12470_outer() {
164 ; This previously crashed during inliner cleanup and folding inner return
165 ; instructions. Check that we don't crash and we produce a function with a single
166 ; return instruction due to merging the returns of the inlined function.
167 ; CHECK: define void @PR12470_outer
170 ; CHECK-NOT: ret void
174 call void @PR12470_inner(i16 signext 1)
178 define void @crasher_inner() nounwind uwtable {
180 br i1 false, label %for.end28, label %for.body6
183 br i1 undef, label %for.body6, label %for.cond12.for.inc26_crit_edge
185 for.cond12.for.inc26_crit_edge:
186 br label %for.body6.1
192 br i1 undef, label %for.body6.1, label %for.cond12.for.inc26_crit_edge.1
194 for.cond12.for.inc26_crit_edge.1:
195 br label %for.body6.2
198 br i1 undef, label %for.body6.2, label %for.cond12.for.inc26_crit_edge.2
200 for.cond12.for.inc26_crit_edge.2:
204 define void @crasher_outer() {
205 ; CHECK: @crasher_outer
211 tail call void @crasher_inner()