| ; RUN: opt -S -passes=gvn-hoist < %s | 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 @test1(i1 %a, ptr %d) { |
| entry: |
| %0 = load ptr, ptr %d, align 8 |
| br i1 %a, label %if.then, label %if.else |
| |
| if.then: ; preds = %entry |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %c.0 = phi i1 [ 1, %if.then ], [ 0, %if.else ] |
| br i1 %c.0, label %if.then2, label %if.else3 |
| |
| if.then2: ; preds = %if.end |
| store i1 %c.0, ptr %0, align 4 |
| br label %if.end6 |
| |
| if.else3: ; preds = %if.end |
| store i1 %c.0, ptr %0, align 4 |
| br label %if.end6 |
| |
| if.end6: ; preds = %if.else3, %if.then2 |
| ret void |
| } |
| |
| ; CHECK-LABEL: define void @test1( |
| ; CHECK: %[[load:.*]] = load ptr, ptr %d, align 8 |
| ; CHECK: %[[phi:.*]] = phi i1 [ true, {{.*}} ], [ false, {{.*}} ] |
| |
| ; CHECK: store i1 %[[phi]], ptr %[[load]], align 4 |
| |
| ; Check that store instructions are hoisted. |
| ; CHECK-NOT: store |
