| David Majnemer | 7a99dd4 | 2016-01-10 07:13:33 +0000 | [diff] [blame] | 1 | ; RUN: opt -prune-eh -inline -jump-threading -S < %s | FileCheck %s |
| 2 | |
| 3 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 4 | target triple = "x86_64-unknown-linux-gnu" |
| 5 | |
| 6 | @d = external global i32*, align 8 |
| 7 | |
| 8 | define void @fn3(i1 %B) { |
| 9 | entry: |
| 10 | br i1 %B, label %if.end, label %if.then |
| 11 | |
| 12 | if.then: ; preds = %entry |
| Jun Bum Lim | 5390716 | 2016-02-01 20:55:11 +0000 | [diff] [blame] | 13 | call void @fn2(i1 %B) |
| David Majnemer | 7a99dd4 | 2016-01-10 07:13:33 +0000 | [diff] [blame] | 14 | ret void |
| 15 | |
| 16 | if.end: ; preds = %entry |
| Jun Bum Lim | 5390716 | 2016-02-01 20:55:11 +0000 | [diff] [blame] | 17 | call void @fn2(i1 %B) |
| David Majnemer | 7a99dd4 | 2016-01-10 07:13:33 +0000 | [diff] [blame] | 18 | ret void |
| 19 | } |
| 20 | |
| Jun Bum Lim | 5390716 | 2016-02-01 20:55:11 +0000 | [diff] [blame] | 21 | define internal void @fn2(i1 %B) unnamed_addr { |
| David Majnemer | 7a99dd4 | 2016-01-10 07:13:33 +0000 | [diff] [blame] | 22 | entry: |
| 23 | call void @fn1() |
| 24 | call void @fn1() |
| 25 | call void @fn1() |
| Jun Bum Lim | 5390716 | 2016-02-01 20:55:11 +0000 | [diff] [blame] | 26 | br i1 %B, label %if.end, label %if.then |
| 27 | if.then: |
| 28 | unreachable |
| 29 | |
| 30 | if.end: |
| David Majnemer | 7a99dd4 | 2016-01-10 07:13:33 +0000 | [diff] [blame] | 31 | unreachable |
| 32 | } |
| 33 | |
| 34 | ; CHECK-LABEL: define internal void @fn2( |
| 35 | ; CHECK: %[[LOAD:.*]] = load i32*, i32** @d, align 8 |
| 36 | ; CHECK: %tobool1.i = icmp eq i32* %[[LOAD]], null |
| 37 | |
| 38 | define internal void @fn1() unnamed_addr { |
| 39 | entry: |
| 40 | br label %for.body |
| 41 | |
| 42 | for.body: ; preds = %entry |
| 43 | %0 = load i32*, i32** @d, align 8 |
| 44 | %tobool1 = icmp eq i32* %0, null |
| 45 | br i1 %tobool1, label %cond.false, label %cond.end |
| 46 | |
| 47 | cond.false: ; preds = %for.body |
| 48 | call void @__assert_fail(i8* null) |
| 49 | unreachable |
| 50 | |
| 51 | cond.end: ; preds = %for.body |
| 52 | %1 = load i32*, i32** @d, align 8 |
| 53 | %cmp = icmp eq i32* %1, null |
| 54 | br i1 %cmp, label %cond.end4, label %cond.false3 |
| 55 | |
| 56 | cond.false3: ; preds = %cond.end |
| 57 | call void @__assert_fail(i8* null) |
| 58 | unreachable |
| 59 | |
| 60 | cond.end4: ; preds = %cond.end |
| 61 | call void @__assert_fail(i8* null) |
| 62 | unreachable |
| 63 | |
| 64 | for.end: ; No predecessors! |
| 65 | ret void |
| 66 | } |
| 67 | |
| 68 | declare void @__assert_fail(i8*) |
| 69 | |
| 70 | ; Function Attrs: noreturn nounwind |
| 71 | declare void @llvm.trap() #0 |
| 72 | |
| 73 | attributes #0 = { noreturn nounwind } |