| David Majnemer | bae9457 | 2016-01-07 19:25:39 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -S -ipsccp | 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 | define void @fn2() { |
| 6 | entry: |
| 7 | br label %if.end |
| 8 | |
| 9 | for.cond1: ; preds = %if.end, %for.end |
| 10 | br i1 undef, label %if.end, label %if.end |
| 11 | |
| 12 | if.end: ; preds = %lbl, %for.cond1 |
| 13 | %e.2 = phi i32* [ undef, %entry ], [ null, %for.cond1 ], [ null, %for.cond1 ] |
| 14 | %0 = load i32, i32* %e.2, align 4 |
| 15 | %call = call i32 @fn1(i32 %0) |
| 16 | br label %for.cond1 |
| 17 | } |
| 18 | |
| 19 | define internal i32 @fn1(i32 %p1) { |
| 20 | entry: |
| 21 | %tobool = icmp ne i32 %p1, 0 |
| 22 | %cond = select i1 %tobool, i32 %p1, i32 %p1 |
| 23 | ret i32 %cond |
| 24 | } |
| 25 | |
| Manoj Gupta | 77eeac3 | 2018-07-09 22:27:23 +0000 | [diff] [blame] | 26 | define void @fn_no_null_opt() #0 { |
| 27 | entry: |
| 28 | br label %if.end |
| 29 | |
| 30 | for.cond1: ; preds = %if.end, %for.end |
| 31 | br i1 undef, label %if.end, label %if.end |
| 32 | |
| 33 | if.end: ; preds = %lbl, %for.cond1 |
| 34 | %e.2 = phi i32* [ undef, %entry ], [ null, %for.cond1 ], [ null, %for.cond1 ] |
| 35 | %0 = load i32, i32* %e.2, align 4 |
| 36 | %call = call i32 @fn0(i32 %0) |
| 37 | br label %for.cond1 |
| 38 | } |
| 39 | |
| 40 | define internal i32 @fn0(i32 %p1) { |
| 41 | entry: |
| 42 | %tobool = icmp ne i32 %p1, 0 |
| 43 | %cond = select i1 %tobool, i32 %p1, i32 %p1 |
| 44 | ret i32 %cond |
| 45 | } |
| 46 | |
| 47 | attributes #0 = { "null-pointer-is-valid"="true" } |
| 48 | |
| David Majnemer | bae9457 | 2016-01-07 19:25:39 +0000 | [diff] [blame] | 49 | ; CHECK-LABEL: define void @fn2( |
| 50 | ; CHECK: call i32 @fn1(i32 undef) |
| 51 | |
| 52 | ; CHECK-LABEL: define internal i32 @fn1( |
| 53 | ; CHECK:%[[COND:.*]] = select i1 undef, i32 undef, i32 undef |
| 54 | ; CHECK: ret i32 %[[COND]] |
| Manoj Gupta | 77eeac3 | 2018-07-09 22:27:23 +0000 | [diff] [blame] | 55 | |
| 56 | ; CHECK-LABEL: define void @fn_no_null_opt( |
| 57 | ; CHECK: call i32 @fn0(i32 %0) |
| 58 | |
| 59 | ; CHECK-LABEL: define internal i32 @fn0( |
| 60 | ; CHECK:%[[TOBOOL:.*]] = icmp ne i32 %p1, 0 |
| 61 | ; CHECK:%[[COND:.*]] = select i1 %[[TOBOOL]], i32 %p1, i32 %p1 |
| 62 | ; CHECK: ret i32 %[[COND]] |