| ; RUN: opt < %s -S -ipsccp | FileCheck %s |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define void @fn2() { |
| entry: |
| br label %if.end |
| |
| for.cond1: ; preds = %if.end, %for.end |
| br i1 undef, label %if.end, label %if.end |
| |
| if.end: ; preds = %lbl, %for.cond1 |
| %e.2 = phi i32* [ undef, %entry ], [ null, %for.cond1 ], [ null, %for.cond1 ] |
| %0 = load i32, i32* %e.2, align 4 |
| %call = call i32 @fn1(i32 %0) |
| br label %for.cond1 |
| } |
| |
| define internal i32 @fn1(i32 %p1) { |
| entry: |
| %tobool = icmp ne i32 %p1, 0 |
| %cond = select i1 %tobool, i32 %p1, i32 %p1 |
| ret i32 %cond |
| } |
| |
| define void @fn_no_null_opt() #0 { |
| entry: |
| br label %if.end |
| |
| for.cond1: ; preds = %if.end, %for.end |
| br i1 undef, label %if.end, label %if.end |
| |
| if.end: ; preds = %lbl, %for.cond1 |
| %e.2 = phi i32* [ undef, %entry ], [ null, %for.cond1 ], [ null, %for.cond1 ] |
| %0 = load i32, i32* %e.2, align 4 |
| %call = call i32 @fn0(i32 %0) |
| br label %for.cond1 |
| } |
| |
| define internal i32 @fn0(i32 %p1) { |
| entry: |
| %tobool = icmp ne i32 %p1, 0 |
| %cond = select i1 %tobool, i32 %p1, i32 %p1 |
| ret i32 %cond |
| } |
| |
| attributes #0 = { "null-pointer-is-valid"="true" } |
| |
| ; CHECK-LABEL: define void @fn2( |
| ; CHECK: call i32 @fn1(i32 undef) |
| |
| ; CHECK-LABEL: define internal i32 @fn1( |
| ; CHECK:%[[COND:.*]] = select i1 undef, i32 undef, i32 undef |
| ; CHECK: ret i32 %[[COND]] |
| |
| ; CHECK-LABEL: define void @fn_no_null_opt( |
| ; CHECK: call i32 @fn0(i32 %0) |
| |
| ; CHECK-LABEL: define internal i32 @fn0( |
| ; CHECK:%[[TOBOOL:.*]] = icmp ne i32 %p1, 0 |
| ; CHECK:%[[COND:.*]] = select i1 %[[TOBOOL]], i32 %p1, i32 %p1 |
| ; CHECK: ret i32 %[[COND]] |
