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1; Test that the inliner doesn't leave around dead allocas, and that it folds2; uncond branches away after it is done specializing.3 4; RUN: opt < %s -passes=inline -S | FileCheck %s5; RUN: opt < %s -passes='cgscc(inline)' -S | FileCheck %s6 7@A = weak global i32 0 ; <ptr> [#uses=1]8@B = weak global i32 0 ; <ptr> [#uses=1]9@C = weak global i32 0 ; <ptr> [#uses=1]10 11define internal fastcc void @foo(i32 %X) {12entry:13 %ALL = alloca i32, align 4 ; <ptr> [#uses=1]14 %tmp1 = and i32 %X, 1 ; <i32> [#uses=1]15 %tmp1.upgrd.1 = icmp eq i32 %tmp1, 0 ; <i1> [#uses=1]16 br i1 %tmp1.upgrd.1, label %cond_next, label %cond_true17 18cond_true: ; preds = %entry19 store i32 1, ptr @A20 br label %cond_next21 22cond_next: ; preds = %cond_true, %entry23 %tmp4 = and i32 %X, 2 ; <i32> [#uses=1]24 %tmp4.upgrd.2 = icmp eq i32 %tmp4, 0 ; <i1> [#uses=1]25 br i1 %tmp4.upgrd.2, label %cond_next7, label %cond_true526 27cond_true5: ; preds = %cond_next28 store i32 1, ptr @B29 br label %cond_next730 31cond_next7: ; preds = %cond_true5, %cond_next32 %tmp10 = and i32 %X, 4 ; <i32> [#uses=1]33 %tmp10.upgrd.3 = icmp eq i32 %tmp10, 0 ; <i1> [#uses=1]34 br i1 %tmp10.upgrd.3, label %cond_next13, label %cond_true1135 36cond_true11: ; preds = %cond_next737 store i32 1, ptr @C38 br label %cond_next1339 40cond_next13: ; preds = %cond_true11, %cond_next741 %tmp16 = and i32 %X, 8 ; <i32> [#uses=1]42 %tmp16.upgrd.4 = icmp eq i32 %tmp16, 0 ; <i1> [#uses=1]43 br i1 %tmp16.upgrd.4, label %UnifiedReturnBlock, label %cond_true1744 45cond_true17: ; preds = %cond_next1346 call void @ext( ptr %ALL )47 ret void48 49UnifiedReturnBlock: ; preds = %cond_next1350 ret void51}52 53declare void @ext(ptr)54 55define void @test() {56; CHECK-LABEL: @test(57; CHECK-NOT: ret58;59; FIXME: This should be a CHECK-NOT, but currently we have a bug that causes us60; to not nuke unused allocas.61; CHECK: alloca62; CHECK-NOT: ret63;64; No branches should survive the inliner's cleanup.65; CHECK-NOT: br66; CHECK: ret void67 68entry:69 tail call fastcc void @foo( i32 1 )70 tail call fastcc void @foo( i32 2 )71 tail call fastcc void @foo( i32 3 )72 tail call fastcc void @foo( i32 8 )73 ret void74}75 76declare void @f(i32 %x)77 78define void @inner2(i32 %x, i32 %y, i32 %z, i1 %b) {79entry:80 %cmp1 = icmp ne i32 %x, 081 br i1 %cmp1, label %then1, label %end182 83then1:84 call void @f(i32 %x)85 br label %end186 87end1:88 %x2 = and i32 %x, %z89 %cmp2 = icmp sgt i32 %x2, 190 br i1 %cmp2, label %then2, label %end291 92then2:93 call void @f(i32 %x2)94 br label %end295 96end2:97 %y2 = or i32 %y, %z98 %cmp3 = icmp sgt i32 %y2, 099 br i1 %cmp3, label %then3, label %end3100 101then3:102 call void @f(i32 %y2)103 br label %end3104 105end3:106 br i1 %b, label %end3.1, label %end3.2107 108end3.1:109 %x3.1 = or i32 %x, 10110 br label %end3.3111 112end3.2:113 %x3.2 = or i32 %x, 10114 br label %end3.3115 116end3.3:117 %x3.3 = phi i32 [ %x3.1, %end3.1 ], [ %x3.2, %end3.2 ]118 %cmp4 = icmp slt i32 %x3.3, 1119 br i1 %cmp4, label %then4, label %end4120 121then4:122 call void @f(i32 %x3.3)123 br label %end4124 125end4:126 ret void127}128 129define void @outer2(i32 %z, i1 %b) {130; Ensure that after inlining, none of the blocks with a call to @f actually131; make it through inlining.132; CHECK-LABEL: define void @outer2(133; CHECK-NOT: call134; CHECK: ret void135 136entry:137 call void @inner2(i32 0, i32 -1, i32 %z, i1 %b)138 ret void139}140 141define void @PR12470_inner(i16 signext %p1, i1 %arg) nounwind uwtable {142entry:143 br i1 %arg, label %cond.true, label %cond.false144 145cond.true:146 br label %cond.end147 148cond.false:149 %conv = sext i16 %p1 to i32150 br label %cond.end151 152cond.end:153 %cond = phi i32 [ undef, %cond.true ], [ 0, %cond.false ]154 %tobool = icmp eq i32 %cond, 0155 br i1 %tobool, label %if.end5, label %if.then156 157if.then:158 ret void159 160if.end5:161 ret void162}163 164define void @PR12470_outer(i1 %arg) {165; This previously crashed during inliner cleanup and folding inner return166; instructions. Check that we don't crash and we produce a function with a single167; return instruction due to merging the returns of the inlined function.168; CHECK-LABEL: define void @PR12470_outer(169; CHECK-NOT: call170; CHECK: ret void171; CHECK-NOT: ret void172; CHECK: }173 174entry:175 call void @PR12470_inner(i16 signext 1, i1 1)176 ret void177}178 179define void @crasher_inner(i1 %arg) nounwind uwtable {180entry:181 br i1 false, label %for.end28, label %for.body6182 183for.body6:184 br i1 %arg, label %for.body6, label %for.cond12.for.inc26_crit_edge185 186for.cond12.for.inc26_crit_edge:187 br label %for.body6.1188 189for.end28:190 ret void191 192for.body6.1:193 br i1 %arg, label %for.body6.1, label %for.cond12.for.inc26_crit_edge.1194 195for.cond12.for.inc26_crit_edge.1:196 br label %for.body6.2197 198for.body6.2:199 br i1 %arg, label %for.body6.2, label %for.cond12.for.inc26_crit_edge.2200 201for.cond12.for.inc26_crit_edge.2:202 br label %for.end28203}204 205define void @crasher_outer() {206; CHECK-LABEL: @crasher_outer(207; CHECK-NOT: call208; CHECK: ret void209; CHECK-NOT: ret210; CHECK: }211entry:212 tail call void @crasher_inner(i1 1)213 ret void214}215