| ; RUN: opt < %s -gvn -enable-pre -S | FileCheck %s |
| |
| @H = common global i32 0 ; <i32*> [#uses=2] |
| @G = common global i32 0 ; <i32*> [#uses=1] |
| |
| define i32 @test() nounwind { |
| entry: |
| %0 = load i32, i32* @H, align 4 ; <i32> [#uses=2] |
| %1 = call i32 (...) @foo() nounwind ; <i32> [#uses=1] |
| %2 = icmp ne i32 %1, 0 ; <i1> [#uses=1] |
| br i1 %2, label %bb, label %bb1 |
| |
| bb: ; preds = %entry |
| %3 = add i32 %0, 42 ; <i32> [#uses=1] |
| ; CHECK: %.pre = add i32 %0, 42 |
| store i32 %3, i32* @G, align 4 |
| br label %bb1 |
| |
| bb1: ; preds = %bb, %entry |
| %4 = add i32 %0, 42 ; <i32> [#uses=1] |
| store i32 %4, i32* @H, align 4 |
| br label %return |
| |
| ; CHECK: %.pre-phi = phi i32 [ %.pre, %entry.bb1_crit_edge ], [ %3, %bb ] |
| ; CHECK-NEXT: store i32 %.pre-phi, i32* @H, align 4 |
| ; CHECK-NEXT: ret i32 0 |
| |
| return: ; preds = %bb1 |
| ret i32 0 |
| } |
| |
| declare i32 @foo(...) |
