| ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -disable-block-placement -verify-machineinstrs -fast-isel=false -machine-sink-split-probability-threshold=0 -cgp-freq-ratio-to-skip-merge=1000 | FileCheck %s |
| ; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -tail-dup-placement=0 -verify-machineinstrs -fast-isel=false -machine-sink-split-probability-threshold=0 -cgp-freq-ratio-to-skip-merge=1000 | FileCheck -check-prefix=OPT %s |
| |
| ; Test the CFG stackifier pass. |
| |
| ; Explicitly disable fast-isel, since it gets implicitly enabled in the |
| ; optnone test. |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" |
| target triple = "wasm32-unknown-unknown" |
| |
| declare void @something() |
| |
| ; Test that loops are made contiguous, even in the presence of split backedges. |
| |
| ; CHECK-LABEL: test0: |
| ; CHECK: loop |
| ; CHECK-NEXT: block |
| ; CHECK: i32.lt_s |
| ; CHECK-NEXT: br_if |
| ; CHECK-NEXT: return |
| ; CHECK-NEXT: .LBB0_3: |
| ; CHECK-NEXT: end_block |
| ; CHECK-NEXT: i32.const |
| ; CHECK-NEXT: i32.add |
| ; CHECK-NEXT: call |
| ; CHECK-NEXT: br |
| ; CHECK-NEXT: .LBB0_4: |
| ; CHECK-NEXT: end_loop |
| ; OPT-LABEL: test0: |
| ; OPT: loop |
| ; OPT: i32.ge_s |
| ; OPT-NEXT: br_if |
| ; OPT-NEXT: i32.const |
| ; OPT-NEXT: i32.add |
| ; OPT-NOT: br |
| ; OPT: call |
| ; OPT: br 0{{$}} |
| ; OPT: return{{$}} |
| define void @test0(i32 %n) { |
| entry: |
| br label %header |
| |
| header: |
| %i = phi i32 [ 0, %entry ], [ %i.next, %back ] |
| %i.next = add i32 %i, 1 |
| |
| %c = icmp slt i32 %i.next, %n |
| br i1 %c, label %back, label %exit |
| |
| exit: |
| ret void |
| |
| back: |
| call void @something() |
| br label %header |
| } |
| |
| ; Same as test0, but the branch condition is reversed. |
| |
| ; CHECK-LABEL: test1: |
| ; CHECK: loop |
| ; CHECK-NEXT: block |
| ; CHECK: i32.lt_s |
| ; CHECK-NEXT: br_if |
| ; CHECK-NEXT: return |
| ; CHECK-NEXT: .LBB1_3: |
| ; CHECK-NEXT: end_block |
| ; CHECK-NEXT: i32.const |
| ; CHECK-NEXT: i32.add |
| ; CHECK-NEXT: call |
| ; CHECK-NEXT: br |
| ; CHECK-NEXT: .LBB1_4: |
| ; CHECK-NEXT: end_loop |
| ; OPT-LABEL: test1: |
| ; OPT: loop |
| ; OPT: i32.ge_s |
| ; OPT-NEXT: br_if |
| ; OPT-NEXT: i32.const |
| ; OPT-NEXT: i32.add |
| ; OPT-NOT: br |
| ; OPT: call |
| ; OPT: br 0{{$}} |
| ; OPT: return{{$}} |
| define void @test1(i32 %n) { |
| entry: |
| br label %header |
| |
| header: |
| %i = phi i32 [ 0, %entry ], [ %i.next, %back ] |
| %i.next = add i32 %i, 1 |
| |
| %c = icmp sge i32 %i.next, %n |
| br i1 %c, label %exit, label %back |
| |
| exit: |
| ret void |
| |
| back: |
| call void @something() |
| br label %header |
| } |
| |
| ; Test that a simple loop is handled as expected. |
| |
| ; CHECK-LABEL: test2: |
| ; CHECK-NOT: local |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK: .LBB2_{{[0-9]+}}: |
| ; CHECK: loop |
| ; CHECK: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; CHECK: .LBB2_{{[0-9]+}}: |
| ; CHECK: end_loop |
| ; CHECK: end_block |
| ; CHECK: return{{$}} |
| ; OPT-LABEL: test2: |
| ; OPT-NOT: local |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT: .LBB2_{{[0-9]+}}: |
| ; OPT: loop |
| ; OPT: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; OPT: .LBB2_{{[0-9]+}}: |
| ; OPT: end_loop |
| ; OPT: end_block |
| ; OPT: return{{$}} |
| define void @test2(double* nocapture %p, i32 %n) { |
| entry: |
| %cmp.4 = icmp sgt i32 %n, 0 |
| br i1 %cmp.4, label %for.body.preheader, label %for.end |
| |
| for.body.preheader: |
| br label %for.body |
| |
| for.body: |
| %i.05 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds double, double* %p, i32 %i.05 |
| %0 = load double, double* %arrayidx, align 8 |
| %mul = fmul double %0, 3.200000e+00 |
| store double %mul, double* %arrayidx, align 8 |
| %inc = add nuw nsw i32 %i.05, 1 |
| %exitcond = icmp eq i32 %inc, %n |
| br i1 %exitcond, label %for.end.loopexit, label %for.body |
| |
| for.end.loopexit: |
| br label %for.end |
| |
| for.end: |
| ret void |
| } |
| |
| ; CHECK-LABEL: doublediamond: |
| ; CHECK: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK: br_if 0, ${{[^,]+}}{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK: .LBB3_2: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, ${{[^,]+}}{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK: .LBB3_4: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK: .LBB3_5: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; CHECK-NEXT: return $pop{{[0-9]+}}{{$}} |
| ; OPT-LABEL: doublediamond: |
| ; OPT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT: br_if 0, ${{[^,]+}}{{$}} |
| ; OPT: br_if 1, ${{[^,]+}}{{$}} |
| ; OPT: br 2{{$}} |
| ; OPT-NEXT: .LBB3_3: |
| ; OPT-NEXT: end_block |
| ; OPT: br 1{{$}} |
| ; OPT-NEXT: .LBB3_4: |
| ; OPT: .LBB3_5: |
| ; OPT-NEXT: end_block |
| ; OPT: return $pop{{[0-9]+}}{{$}} |
| define i32 @doublediamond(i32 %a, i32 %b, i32* %p) { |
| entry: |
| %c = icmp eq i32 %a, 0 |
| %d = icmp eq i32 %b, 0 |
| store volatile i32 0, i32* %p |
| br i1 %c, label %true, label %false |
| true: |
| store volatile i32 1, i32* %p |
| br label %exit |
| false: |
| store volatile i32 2, i32* %p |
| br i1 %d, label %ft, label %ff |
| ft: |
| store volatile i32 3, i32* %p |
| br label %exit |
| ff: |
| store volatile i32 4, i32* %p |
| br label %exit |
| exit: |
| store volatile i32 5, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: triangle: |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $1{{$}} |
| ; CHECK: .LBB4_2: |
| ; CHECK: return |
| ; OPT-LABEL: triangle: |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, $1{{$}} |
| ; OPT: .LBB4_2: |
| ; OPT: return |
| define i32 @triangle(i32* %p, i32 %a) { |
| entry: |
| %c = icmp eq i32 %a, 0 |
| store volatile i32 0, i32* %p |
| br i1 %c, label %true, label %exit |
| true: |
| store volatile i32 1, i32* %p |
| br label %exit |
| exit: |
| store volatile i32 2, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: diamond: |
| ; CHECK: block {{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $1{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK: .LBB5_2: |
| ; CHECK: .LBB5_3: |
| ; CHECK: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; CHECK-NEXT: return $pop{{[0-9]+}}{{$}} |
| ; OPT-LABEL: diamond: |
| ; OPT: block {{$}} |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT: br 1{{$}} |
| ; OPT: .LBB5_2: |
| ; OPT: .LBB5_3: |
| ; OPT: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; OPT-NEXT: return $pop{{[0-9]+}}{{$}} |
| define i32 @diamond(i32* %p, i32 %a) { |
| entry: |
| %c = icmp eq i32 %a, 0 |
| store volatile i32 0, i32* %p |
| br i1 %c, label %true, label %false |
| true: |
| store volatile i32 1, i32* %p |
| br label %exit |
| false: |
| store volatile i32 2, i32* %p |
| br label %exit |
| exit: |
| store volatile i32 3, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: single_block: |
| ; CHECK-NOT: br |
| ; CHECK: return $pop{{[0-9]+}}{{$}} |
| ; OPT-LABEL: single_block: |
| ; OPT-NOT: br |
| ; OPT: return $pop{{[0-9]+}}{{$}} |
| define i32 @single_block(i32* %p) { |
| entry: |
| store volatile i32 0, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: minimal_loop: |
| ; CHECK-NOT: br |
| ; CHECK: .LBB7_1: |
| ; CHECK: loop i32 |
| ; CHECK: i32.store 0($0), $pop{{[0-9]+}}{{$}} |
| ; CHECK: br 0{{$}} |
| ; CHECK: .LBB7_2: |
| ; OPT-LABEL: minimal_loop: |
| ; OPT-NOT: br |
| ; OPT: .LBB7_1: |
| ; OPT: loop i32 |
| ; OPT: i32.store 0($0), $pop{{[0-9]+}}{{$}} |
| ; OPT: br 0{{$}} |
| ; OPT: .LBB7_2: |
| define i32 @minimal_loop(i32* %p) { |
| entry: |
| store volatile i32 0, i32* %p |
| br label %loop |
| loop: |
| store volatile i32 1, i32* %p |
| br label %loop |
| } |
| |
| ; CHECK-LABEL: simple_loop: |
| ; CHECK-NOT: br |
| ; CHECK: .LBB8_1: |
| ; CHECK: loop {{$}} |
| ; CHECK: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; CHECK-NEXT: return $pop{{[0-9]+}}{{$}} |
| ; OPT-LABEL: simple_loop: |
| ; OPT-NOT: br |
| ; OPT: .LBB8_1: |
| ; OPT: loop {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: end_loop{{$}} |
| ; OPT: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; OPT-NEXT: return $pop{{[0-9]+}}{{$}} |
| define i32 @simple_loop(i32* %p, i32 %a) { |
| entry: |
| %c = icmp eq i32 %a, 0 |
| store volatile i32 0, i32* %p |
| br label %loop |
| loop: |
| store volatile i32 1, i32* %p |
| br i1 %c, label %loop, label %exit |
| exit: |
| store volatile i32 2, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: doubletriangle: |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $0{{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $1{{$}} |
| ; CHECK: .LBB9_3: |
| ; CHECK: .LBB9_4: |
| ; CHECK: return |
| ; OPT-LABEL: doubletriangle: |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, $0{{$}} |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, $1{{$}} |
| ; OPT: .LBB9_3: |
| ; OPT: .LBB9_4: |
| ; OPT: return |
| define i32 @doubletriangle(i32 %a, i32 %b, i32* %p) { |
| entry: |
| %c = icmp eq i32 %a, 0 |
| %d = icmp eq i32 %b, 0 |
| store volatile i32 0, i32* %p |
| br i1 %c, label %true, label %exit |
| true: |
| store volatile i32 2, i32* %p |
| br i1 %d, label %tt, label %tf |
| tt: |
| store volatile i32 3, i32* %p |
| br label %tf |
| tf: |
| store volatile i32 4, i32* %p |
| br label %exit |
| exit: |
| store volatile i32 5, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: ifelse_earlyexits: |
| ; CHECK: block {{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $0{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK: .LBB10_2: |
| ; CHECK: br_if 0, $1{{$}} |
| ; CHECK: .LBB10_4: |
| ; CHECK: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; CHECK-NEXT: return $pop{{[0-9]+}}{{$}} |
| ; OPT-LABEL: ifelse_earlyexits: |
| ; OPT: block {{$}} |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT: br_if 1, $1{{$}} |
| ; OPT: br 1{{$}} |
| ; OPT: .LBB10_3: |
| ; OPT: .LBB10_4: |
| ; OPT: i32.const $push{{[0-9]+}}=, 0{{$}} |
| ; OPT-NEXT: return $pop{{[0-9]+}}{{$}} |
| define i32 @ifelse_earlyexits(i32 %a, i32 %b, i32* %p) { |
| entry: |
| %c = icmp eq i32 %a, 0 |
| %d = icmp eq i32 %b, 0 |
| store volatile i32 0, i32* %p |
| br i1 %c, label %true, label %false |
| true: |
| store volatile i32 1, i32* %p |
| br label %exit |
| false: |
| store volatile i32 2, i32* %p |
| br i1 %d, label %ft, label %exit |
| ft: |
| store volatile i32 3, i32* %p |
| br label %exit |
| exit: |
| store volatile i32 4, i32* %p |
| ret i32 0 |
| } |
| |
| ; CHECK-LABEL: doublediamond_in_a_loop: |
| ; CHECK: .LBB11_1: |
| ; CHECK: loop i32{{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $0{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK: .LBB11_3: |
| ; CHECK: end_block{{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $1{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK: .LBB11_5: |
| ; CHECK: br 0{{$}} |
| ; CHECK: .LBB11_6: |
| ; CHECK-NEXT: end_loop{{$}} |
| ; OPT-LABEL: doublediamond_in_a_loop: |
| ; OPT: .LBB11_1: |
| ; OPT: loop i32{{$}} |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT: br 2{{$}} |
| ; OPT-NEXT: .LBB11_4: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT: br 1{{$}} |
| ; OPT: .LBB11_5: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT: br 0{{$}} |
| ; OPT: .LBB11_6: |
| ; OPT-NEXT: end_loop{{$}} |
| define i32 @doublediamond_in_a_loop(i32 %a, i32 %b, i32* %p) { |
| entry: |
| br label %header |
| header: |
| %c = icmp eq i32 %a, 0 |
| %d = icmp eq i32 %b, 0 |
| store volatile i32 0, i32* %p |
| br i1 %c, label %true, label %false |
| true: |
| store volatile i32 1, i32* %p |
| br label %exit |
| false: |
| store volatile i32 2, i32* %p |
| br i1 %d, label %ft, label %ff |
| ft: |
| store volatile i32 3, i32* %p |
| br label %exit |
| ff: |
| store volatile i32 4, i32* %p |
| br label %exit |
| exit: |
| store volatile i32 5, i32* %p |
| br label %header |
| } |
| |
| ; Test that nested loops are handled. |
| |
| ; CHECK-LABEL: test3: |
| ; CHECK: loop |
| ; CHECK-NEXT: br_if |
| ; CHECK-NEXT: .LBB{{[0-9]+}}_{{[0-9]+}}: |
| ; CHECK-NEXT: loop |
| ; OPT-LABEL: test3: |
| ; OPT: block |
| ; OPT: br_if |
| ; OPT: .LBB{{[0-9]+}}_{{[0-9]+}}: |
| ; OPT-NEXT: loop |
| ; OPT-NEXT: block |
| ; OPT-NEXT: block |
| ; OPT-NEXT: br_if |
| ; OPT-NEXT: .LBB{{[0-9]+}}_{{[0-9]+}}: |
| ; OPT-NEXT: loop |
| ; OPT: br_if |
| ; OPT-NEXT: br |
| ; OPT-NEXT: .LBB{{[0-9]+}}_{{[0-9]+}}: |
| ; OPT-NEXT: end_loop |
| ; OPT-NEXT: end_block |
| ; OPT-NEXT: unreachable |
| ; OPT-NEXT: .LBB{{[0-9]+}}_{{[0-9]+}}: |
| ; OPT-NEXT: end_block |
| ; OPT: br |
| ; OPT-NEXT: .LBB{{[0-9]+}}_{{[0-9]+}}: |
| ; OPT-NEXT: end_loop |
| declare void @bar() |
| define void @test3(i32 %w) { |
| entry: |
| br i1 undef, label %outer.ph, label %exit |
| |
| outer.ph: |
| br label %outer |
| |
| outer: |
| %tobool = icmp eq i32 undef, 0 |
| br i1 %tobool, label %inner, label %unreachable |
| |
| unreachable: |
| unreachable |
| |
| inner: |
| %c = icmp eq i32 undef, %w |
| br i1 %c, label %if.end, label %inner |
| |
| exit: |
| ret void |
| |
| if.end: |
| call void @bar() |
| br label %outer |
| } |
| |
| ; Test switch lowering and block placement. |
| |
| ; CHECK-LABEL: test4: |
| ; CHECK-NEXT: .functype test4 (i32) -> (){{$}} |
| ; CHECK: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; CHECK: br_if 1, $pop{{[0-9]+}}{{$}} |
| ; CHECK: br 1{{$}} |
| ; CHECK-NEXT: .LBB13_3: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; CHECK: br_if 1, $pop{{[0-9]+}}{{$}} |
| ; CHECK-NEXT: .LBB13_5: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: return{{$}} |
| ; CHECK-NEXT: .LBB13_6: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: return{{$}} |
| ; OPT-LABEL: test4: |
| ; OPT-NEXT: .functype test4 (i32) -> (){{$}} |
| ; OPT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; OPT: br_if 1, $pop{{[0-9]+}}{{$}} |
| ; OPT: br 1{{$}} |
| ; OPT-NEXT: .LBB13_3: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; OPT: br_if 1, $pop{{[0-9]+}}{{$}} |
| ; OPT-NEXT: .LBB13_5: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NEXT: return{{$}} |
| ; OPT-NEXT: .LBB13_6: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NEXT: return{{$}} |
| define void @test4(i32 %t) { |
| entry: |
| switch i32 %t, label %default [ |
| i32 0, label %bb2 |
| i32 2, label %bb2 |
| i32 4, label %bb1 |
| i32 622, label %bb0 |
| ] |
| |
| bb0: |
| ret void |
| |
| bb1: |
| ret void |
| |
| bb2: |
| ret void |
| |
| default: |
| ret void |
| } |
| |
| ; Test a case where the BLOCK needs to be placed before the LOOP in the |
| ; same basic block. |
| |
| ; CHECK-LABEL: test5: |
| ; CHECK: .LBB14_1: |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK: return{{$}} |
| ; CHECK-NEXT: .LBB14_4: |
| ; CHECK: return{{$}} |
| ; OPT-LABEL: test5: |
| ; OPT: .LBB14_1: |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: loop {{$}} |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: end_loop{{$}} |
| ; OPT: return{{$}} |
| ; OPT-NEXT: .LBB14_4: |
| ; OPT: return{{$}} |
| define void @test5(i1 %p, i1 %q) { |
| entry: |
| br label %header |
| |
| header: |
| store volatile i32 0, i32* null |
| br i1 %p, label %more, label %alt |
| |
| more: |
| store volatile i32 1, i32* null |
| br i1 %q, label %header, label %return |
| |
| alt: |
| store volatile i32 2, i32* null |
| ret void |
| |
| return: |
| store volatile i32 3, i32* null |
| ret void |
| } |
| |
| ; Test an interesting case of a loop with multiple exits, which |
| ; aren't to layout successors of the loop, and one of which is to a successors |
| ; which has another predecessor. |
| |
| ; CHECK-LABEL: test6: |
| ; CHECK: .LBB15_1: |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 2, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; CHECK-NEXT: .LBB15_5: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: .LBB15_6: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; OPT-LABEL: test6: |
| ; OPT: .LBB15_1: |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 2, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: end_loop{{$}} |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| ; OPT-NEXT: .LBB15_5: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: .LBB15_6: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| define void @test6(i1 %p, i1 %q) { |
| entry: |
| br label %header |
| |
| header: |
| store volatile i32 0, i32* null |
| br i1 %p, label %more, label %second |
| |
| more: |
| store volatile i32 1, i32* null |
| br i1 %q, label %evenmore, label %first |
| |
| evenmore: |
| store volatile i32 1, i32* null |
| br i1 %q, label %header, label %return |
| |
| return: |
| store volatile i32 2, i32* null |
| ret void |
| |
| first: |
| store volatile i32 3, i32* null |
| br label %second |
| |
| second: |
| store volatile i32 4, i32* null |
| ret void |
| } |
| |
| ; Test a case where there are multiple backedges and multiple loop exits |
| ; that end in unreachable. |
| |
| ; CHECK-LABEL: test7: |
| ; CHECK: .LBB16_1: |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: unreachable |
| ; CHECK-NEXT: .LBB16_4: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: unreachable |
| ; OPT-LABEL: test7: |
| ; OPT: .LBB16_1: |
| ; OPT-NEXT: block |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: block {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT: br 2{{$}} |
| ; OPT-NEXT: .LBB16_3: |
| ; OPT-NEXT: end_block |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: end_loop |
| ; OPT-NOT: block |
| ; OPT: unreachable |
| ; OPT-NEXT: .LBB16_5: |
| ; OPT-NEXT: end_block |
| ; OPT-NOT: block |
| ; OPT: unreachable |
| define void @test7(i1 %tobool2, i1 %tobool9) { |
| entry: |
| store volatile i32 0, i32* null |
| br label %loop |
| |
| loop: |
| store volatile i32 1, i32* null |
| br i1 %tobool2, label %l1, label %l0 |
| |
| l0: |
| store volatile i32 2, i32* null |
| br i1 %tobool9, label %loop, label %u0 |
| |
| l1: |
| store volatile i32 3, i32* null |
| br i1 %tobool9, label %loop, label %u1 |
| |
| u0: |
| store volatile i32 4, i32* null |
| unreachable |
| |
| u1: |
| store volatile i32 5, i32* null |
| unreachable |
| } |
| |
| ; Test an interesting case using nested loops and switches. |
| |
| ; CHECK-LABEL: test8: |
| ; CHECK: .LBB17_1: |
| ; CHECK-NEXT: loop i32{{$}} |
| ; CHECK-NEXT: i32.const $push{{[^,]+}}, 0{{$}} |
| ; CHECK-NEXT: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: br 0{{$}} |
| ; CHECK-NEXT: .LBB17_2: |
| ; CHECK-NEXT: end_loop{{$}} |
| ; OPT-LABEL: test8: |
| ; OPT: .LBB17_1: |
| ; OPT-NEXT: loop i32{{$}} |
| ; OPT-NEXT: i32.const $push{{[^,]+}}, 0{{$}} |
| ; OPT-NEXT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: br 0{{$}} |
| ; OPT-NEXT: .LBB17_2: |
| ; OPT-NEXT: end_loop{{$}} |
| define i32 @test8() { |
| bb: |
| br label %bb1 |
| |
| bb1: |
| br i1 undef, label %bb2, label %bb3 |
| |
| bb2: |
| switch i8 undef, label %bb1 [ |
| i8 44, label %bb2 |
| ] |
| |
| bb3: |
| switch i8 undef, label %bb1 [ |
| i8 44, label %bb2 |
| ] |
| } |
| |
| ; Test an interesting case using nested loops that share a bottom block. |
| |
| ; CHECK-LABEL: test9: |
| ; CHECK: .LBB18_1: |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: .LBB18_2: |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: block {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 2, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: br 1{{$}} |
| ; CHECK-NEXT: .LBB18_4: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: br 0{{$}} |
| ; CHECK-NEXT: .LBB18_5: |
| ; CHECK-NOT: block |
| ; CHECK: end_block |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; OPT-LABEL: test9: |
| ; OPT: .LBB18_1: |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NEXT: .LBB18_2: |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: block {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NEXT: br 2{{$}} |
| ; OPT-NEXT: .LBB18_4: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: br 1{{$}} |
| ; OPT-NEXT: .LBB18_5: |
| ; OPT-NOT: block |
| ; OPT: end_block |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| declare i1 @a() |
| define void @test9() { |
| entry: |
| store volatile i32 0, i32* null |
| br label %header |
| |
| header: |
| store volatile i32 1, i32* null |
| %call4 = call i1 @a() |
| br i1 %call4, label %header2, label %end |
| |
| header2: |
| store volatile i32 2, i32* null |
| %call = call i1 @a() |
| br i1 %call, label %if.then, label %if.else |
| |
| if.then: |
| store volatile i32 3, i32* null |
| %call3 = call i1 @a() |
| br i1 %call3, label %header2, label %header |
| |
| if.else: |
| store volatile i32 4, i32* null |
| %call2 = call i1 @a() |
| br i1 %call2, label %header2, label %header |
| |
| end: |
| store volatile i32 5, i32* null |
| ret void |
| } |
| |
| ; Test an interesting case involving nested loops sharing a loop bottom, |
| ; and loop exits to a block with unreachable. |
| |
| ; CHECK-LABEL: test10: |
| ; CHECK: .LBB19_1: |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK: .LBB19_3: |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: .LBB19_4: |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: return{{$}} |
| ; CHECK-NEXT: .LBB19_9: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br 0{{$}} |
| ; CHECK-NEXT: .LBB19_10: |
| ; OPT-LABEL: test10: |
| ; OPT: .LBB19_1: |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT: .LBB19_3: |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: .LBB19_4: |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: end_loop{{$}} |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NEXT: end_loop{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NEXT: return{{$}} |
| ; OPT-NEXT: .LBB19_9: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: br 0{{$}} |
| ; OPT-NEXT: .LBB19_10: |
| define void @test10() { |
| bb0: |
| br label %bb1 |
| |
| bb1: |
| %tmp = phi i32 [ 2, %bb0 ], [ 3, %bb3 ] |
| %tmp3 = phi i32 [ undef, %bb0 ], [ %tmp11, %bb3 ] |
| %tmp4 = icmp eq i32 %tmp3, 0 |
| br i1 %tmp4, label %bb4, label %bb2 |
| |
| bb2: |
| br label %bb3 |
| |
| bb3: |
| %tmp11 = phi i32 [ 1, %bb5 ], [ 0, %bb2 ] |
| br label %bb1 |
| |
| bb4: |
| %tmp6 = phi i32 [ %tmp9, %bb5 ], [ 4, %bb1 ] |
| %tmp7 = phi i32 [ %tmp6, %bb5 ], [ %tmp, %bb1 ] |
| br label %bb5 |
| |
| bb5: |
| %tmp9 = phi i32 [ %tmp6, %bb5 ], [ %tmp7, %bb4 ] |
| switch i32 %tmp9, label %bb2 [ |
| i32 0, label %bb5 |
| i32 1, label %bb6 |
| i32 3, label %bb4 |
| i32 4, label %bb3 |
| ] |
| |
| bb6: |
| ret void |
| } |
| |
| ; Test a CFG DAG with interesting merging. |
| |
| ; CHECK-LABEL: test11: |
| ; CHECK: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: block {{$}} |
| ; CHECK-NEXT: i32.const |
| ; CHECK-NEXT: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 2, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: .LBB20_3: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; CHECK-NEXT: .LBB20_4: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 2, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: .LBB20_6: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; CHECK-NEXT: .LBB20_7: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; CHECK-NEXT: .LBB20_8: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: return{{$}} |
| ; OPT-LABEL: test11: |
| ; OPT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: block {{$}} |
| ; OPT-NEXT: i32.const |
| ; OPT-NEXT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 2, {{[^,]+}}{{$}} |
| ; OPT-NEXT: .LBB20_3: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| ; OPT-NEXT: .LBB20_4: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: block {{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| ; OPT-NEXT: .LBB20_6: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, $pop{{[0-9]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| ; OPT-NEXT: .LBB20_8: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: return{{$}} |
| define void @test11() { |
| bb0: |
| store volatile i32 0, i32* null |
| br i1 undef, label %bb1, label %bb4 |
| bb1: |
| store volatile i32 1, i32* null |
| br i1 undef, label %bb3, label %bb2 |
| bb2: |
| store volatile i32 2, i32* null |
| br i1 undef, label %bb3, label %bb7 |
| bb3: |
| store volatile i32 3, i32* null |
| ret void |
| bb4: |
| store volatile i32 4, i32* null |
| br i1 undef, label %bb8, label %bb5 |
| bb5: |
| store volatile i32 5, i32* null |
| br i1 undef, label %bb6, label %bb7 |
| bb6: |
| store volatile i32 6, i32* null |
| ret void |
| bb7: |
| store volatile i32 7, i32* null |
| ret void |
| bb8: |
| store volatile i32 8, i32* null |
| ret void |
| } |
| |
| ; CHECK-LABEL: test12: |
| ; CHECK: .LBB21_1: |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NOT: block |
| ; CHECK: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 1, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: br 3{{$}} |
| ; CHECK-NEXT: .LBB21_4: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 0, {{[^,]+}}{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br_if 2, {{[^,]+}}{{$}} |
| ; CHECK-NEXT: .LBB21_6: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NOT: block |
| ; CHECK: br 0{{$}} |
| ; CHECK-NEXT: .LBB21_7: |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: return{{$}} |
| ; OPT-LABEL: test12: |
| ; OPT: .LBB21_1: |
| ; OPT-NEXT: block {{$}} |
| ; OPT-NEXT: loop {{$}} |
| ; OPT-NOT: block |
| ; OPT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 1, {{[^,]+}}{{$}} |
| ; OPT-NEXT: br 3{{$}} |
| ; OPT-NEXT: .LBB21_4: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 0, {{[^,]+}}{{$}} |
| ; OPT-NOT: block |
| ; OPT: br_if 2, {{[^,]+}}{{$}} |
| ; OPT-NEXT: .LBB21_6: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT: br 0{{$}} |
| ; OPT-NEXT: .LBB21_7: |
| ; OPT-NEXT: end_loop{{$}} |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NEXT: return{{$}} |
| define void @test12(i8* %arg) { |
| bb: |
| br label %bb1 |
| |
| bb1: |
| %tmp = phi i32 [ 0, %bb ], [ %tmp5, %bb4 ] |
| %tmp2 = getelementptr i8, i8* %arg, i32 %tmp |
| %tmp3 = load i8, i8* %tmp2 |
| switch i8 %tmp3, label %bb7 [ |
| i8 42, label %bb4 |
| i8 76, label %bb4 |
| i8 108, label %bb4 |
| i8 104, label %bb4 |
| ] |
| |
| bb4: |
| %tmp5 = add i32 %tmp, 1 |
| br label %bb1 |
| |
| bb7: |
| ret void |
| } |
| |
| ; A block can be "branched to" from another even if it is also reachable via |
| ; fallthrough from the other. This would normally be optimized away, so use |
| ; optnone to disable optimizations to test this case. |
| |
| ; CHECK-LABEL: test13: |
| ; CHECK: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK: br_if 0, $pop0{{$}} |
| ; CHECK: block {{$}} |
| ; CHECK: br_if 0, $pop3{{$}} |
| ; CHECK: .LBB22_3: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK: br_if 1, $pop{{[0-9]+}}{{$}} |
| ; CHECK-NEXT: br 1{{$}} |
| ; CHECK-NEXT: .LBB22_4: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: return{{$}} |
| ; CHECK-NEXT: .LBB22_5: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: unreachable{{$}} |
| ; OPT-LABEL: test13: |
| ; OPT: block {{$}} |
| ; OPT-NEXT: block {{$}} |
| ; OPT: br_if 0, $pop0{{$}} |
| ; OPT: block {{$}} |
| ; OPT: br_if 0, $pop3{{$}} |
| ; OPT: .LBB22_3: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT: br_if 1, $pop{{[0-9]+}}{{$}} |
| ; OPT-NEXT: br 1{{$}} |
| ; OPT-NEXT: .LBB22_4: |
| ; OPT-NEXT: end_block |
| ; OPT-NEXT: return |
| ; OPT-NEXT: .LBB22_5: |
| ; OPT-NEXT: end_block{{$}} |
| ; OPT-NEXT: unreachable{{$}} |
| define void @test13() noinline optnone { |
| bb: |
| br i1 undef, label %bb5, label %bb2 |
| bb1: |
| unreachable |
| bb2: |
| br i1 undef, label %bb3, label %bb4 |
| bb3: |
| br label %bb4 |
| bb4: |
| %tmp = phi i1 [ false, %bb2 ], [ false, %bb3 ] |
| br i1 %tmp, label %bb1, label %bb1 |
| bb5: |
| ret void |
| } |
| |
| ; Test a case with a single-block loop that has another loop |
| ; as a successor. The end_loop for the first loop should go |
| ; before the loop for the second. |
| |
| ; CHECK-LABEL: test14: |
| ; CHECK: .LBB23_1:{{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NEXT: i32.const $push0=, 0{{$}} |
| ; CHECK-NEXT: br_if 0, $pop0{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK-NEXT: .LBB23_3:{{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK-NEXT: i32.const $push1=, 0{{$}} |
| ; CHECK-NEXT: br_if 0, $pop1{{$}} |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK-NEXT: return{{$}} |
| define void @test14() { |
| bb: |
| br label %bb1 |
| |
| bb1: |
| %tmp = bitcast i1 undef to i1 |
| br i1 %tmp, label %bb3, label %bb1 |
| |
| bb3: |
| br label %bb4 |
| |
| bb4: |
| br i1 undef, label %bb7, label %bb48 |
| |
| bb7: |
| br i1 undef, label %bb12, label %bb12 |
| |
| bb12: |
| br i1 undef, label %bb17, label %bb17 |
| |
| bb17: |
| br i1 undef, label %bb22, label %bb22 |
| |
| bb22: |
| br i1 undef, label %bb27, label %bb27 |
| |
| bb27: |
| br i1 undef, label %bb30, label %bb30 |
| |
| bb30: |
| br i1 undef, label %bb35, label %bb35 |
| |
| bb35: |
| br i1 undef, label %bb38, label %bb38 |
| |
| bb38: |
| br i1 undef, label %bb48, label %bb48 |
| |
| bb48: |
| %tmp49 = bitcast i1 undef to i1 |
| br i1 %tmp49, label %bb3, label %bb50 |
| |
| bb50: |
| ret void |
| } |
| |
| ; Test that a block boundary which ends one block, begins another block, and |
| ; also begins a loop, has the markers placed in the correct order. |
| |
| ; CHECK-LABEL: test15: |
| ; CHECK: block |
| ; CHECK-NEXT: block |
| ; CHECK: br_if 0, $pop{{.*}}{{$}} |
| ; CHECK: .LBB24_2: |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: block {{$}} |
| ; CHECK-NEXT: loop {{$}} |
| ; CHECK: br_if 1, $pop{{.*}}{{$}} |
| ; CHECK: br_if 0, ${{.*}}{{$}} |
| ; CHECK-NEXT: br 2{{$}} |
| ; CHECK-NEXT: .LBB24_4: |
| ; CHECK-NEXT: end_loop{{$}} |
| ; CHECK: .LBB24_5: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK: br_if 1, $pop{{.*}}{{$}} |
| ; CHECK: return{{$}} |
| ; CHECK: .LBB24_7: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK: .LBB24_8: |
| ; CHECK-NEXT: end_block{{$}} |
| ; CHECK-NEXT: return{{$}} |
| ; OPT-LABEL: test15: |
| ; OPT: block |
| ; OPT: block |
| ; OPT-NEXT: i32.const $push |
| ; OPT-NEXT: i32.eqz $push{{.*}}=, $pop{{.*}}{{$}} |
| ; OPT-NEXT: br_if 0, $pop{{.*}}{{$}} |
| ; OPT-NEXT: call test15_callee1@FUNCTION{{$}} |
| ; OPT-NEXT: br 1{{$}} |
| ; OPT-NEXT: .LBB24_2: |
| ; OPT-NEXT: end_block |
| ; OPT-NEXT: i32.const |
| ; OPT-NEXT: .LBB24_3: |
| ; OPT-NEXT: block |
| ; OPT-NEXT: block |
| ; OPT-NEXT: loop |
| %0 = type { i8, i32 } |
| declare void @test15_callee0() |
| declare void @test15_callee1() |
| define void @test15() { |
| bb: |
| %tmp1 = icmp eq i8 1, 0 |
| br i1 %tmp1, label %bb2, label %bb14 |
| |
| bb2: |
| %tmp3 = phi %0** [ %tmp6, %bb5 ], [ null, %bb ] |
| %tmp4 = icmp eq i32 0, 11 |
| br i1 %tmp4, label %bb5, label %bb8 |
| |
| bb5: |
| %tmp = bitcast i8* null to %0** |
| %tmp6 = getelementptr %0*, %0** %tmp3, i32 1 |
| %tmp7 = icmp eq %0** %tmp6, null |
| br i1 %tmp7, label %bb10, label %bb2 |
| |
| bb8: |
| %tmp9 = icmp eq %0** null, undef |
| br label %bb10 |
| |
| bb10: |
| %tmp11 = phi %0** [ null, %bb8 ], [ %tmp, %bb5 ] |
| %tmp12 = icmp eq %0** null, %tmp11 |
| br i1 %tmp12, label %bb15, label %bb13 |
| |
| bb13: |
| call void @test15_callee0() |
| ret void |
| |
| bb14: |
| call void @test15_callee1() |
| ret void |
| |
| bb15: |
| ret void |
| } |
