| David Majnemer | 4745125 | 2016-05-26 07:11:09 +0000 | [diff] [blame] | 1 | ; RUN: opt -basicaa -memdep -mldst-motion -S < %s | FileCheck %s |
| 2 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 3 | target triple = "x86_64-unknown-linux-gnu" |
| 4 | |
| 5 | @r = common global i32 0, align 4 |
| 6 | @s = common global i32 0, align 4 |
| 7 | |
| 8 | ; CHECK-LABEL: define void @test1( |
| 9 | define void @test1(i1 %cmp, i32* noalias %p) { |
| 10 | entry: |
| 11 | br i1 %cmp, label %if.then, label %if.else |
| 12 | |
| 13 | if.then: ; preds = %entry |
| Eli Friedman | 9f8031c | 2016-06-12 02:11:20 +0000 | [diff] [blame] | 14 | call void @may_exit() nounwind |
| David Majnemer | 4745125 | 2016-05-26 07:11:09 +0000 | [diff] [blame] | 15 | %arrayidx = getelementptr inbounds i32, i32* %p, i64 1 |
| 16 | %0 = load i32, i32* %arrayidx, align 4 |
| 17 | store i32 %0, i32* @r, align 4 |
| 18 | br label %if.end |
| Eli Friedman | 9f8031c | 2016-06-12 02:11:20 +0000 | [diff] [blame] | 19 | ; CHECK: call void @may_exit() |
| David Majnemer | 4745125 | 2016-05-26 07:11:09 +0000 | [diff] [blame] | 20 | ; CHECK-NEXT: %[[gep:.*]] = getelementptr inbounds i32, i32* %p, i64 1 |
| 21 | ; CHECK-NEXT: %[[load:.*]] = load i32, i32* %[[gep]], align 4 |
| 22 | ; CHECK-NEXT: store i32 %[[load]], i32* @r, align 4 |
| 23 | |
| 24 | if.else: ; preds = %entry |
| 25 | %arrayidx1 = getelementptr inbounds i32, i32* %p, i64 1 |
| 26 | %1 = load i32, i32* %arrayidx1, align 4 |
| 27 | store i32 %1, i32* @s, align 4 |
| 28 | br label %if.end |
| 29 | |
| 30 | if.end: ; preds = %if.else, %if.then |
| 31 | ret void |
| 32 | } |
| 33 | |
| 34 | ; CHECK-LABEL: define void @test2( |
| 35 | define void @test2(i1 %cmp, i32* noalias %p) { |
| 36 | entry: |
| 37 | br i1 %cmp, label %if.then, label %if.else |
| 38 | |
| 39 | if.then: ; preds = %entry |
| 40 | %arrayidx = getelementptr inbounds i32, i32* %p, i64 1 |
| 41 | store i32 1, i32* %arrayidx, align 4 |
| 42 | call void @may_throw() |
| 43 | ; CHECK: %[[gep:.*]] = getelementptr inbounds i32, i32* %p, i64 1 |
| 44 | ; CHECK-NEXT: store i32 1, i32* %[[gep]], align 4 |
| 45 | ; CHECK-NEXT: call void @may_throw() |
| 46 | br label %if.end |
| 47 | |
| 48 | if.else: ; preds = %entry |
| 49 | %arrayidx1 = getelementptr inbounds i32, i32* %p, i64 1 |
| 50 | store i32 2, i32* %arrayidx1, align 4 |
| 51 | br label %if.end |
| 52 | |
| 53 | if.end: ; preds = %if.else, %if.then |
| 54 | ret void |
| 55 | } |
| 56 | |
| 57 | declare void @may_throw() |
| Eli Friedman | 9f8031c | 2016-06-12 02:11:20 +0000 | [diff] [blame] | 58 | declare void @may_exit() nounwind |