39 lines · plain
1; RUN: opt -S -passes=gvn-hoist < %s | FileCheck %s2target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"3target triple = "x86_64-unknown-linux-gnu"4 5define void @test1(i1 %a, ptr %d) {6entry:7 %0 = load ptr, ptr %d, align 88 br i1 %a, label %if.then, label %if.else9 10if.then: ; preds = %entry11 br label %if.end12 13if.else: ; preds = %entry14 br label %if.end15 16if.end: ; preds = %if.else, %if.then17 %c.0 = phi i1 [ 1, %if.then ], [ 0, %if.else ]18 br i1 %c.0, label %if.then2, label %if.else319 20if.then2: ; preds = %if.end21 store i1 %c.0, ptr %0, align 422 br label %if.end623 24if.else3: ; preds = %if.end25 store i1 %c.0, ptr %0, align 426 br label %if.end627 28if.end6: ; preds = %if.else3, %if.then229 ret void30}31 32; CHECK-LABEL: define void @test1(33; CHECK: %[[load:.*]] = load ptr, ptr %d, align 834; CHECK: %[[phi:.*]] = phi i1 [ true, {{.*}} ], [ false, {{.*}} ]35 36; CHECK: store i1 %[[phi]], ptr %[[load]], align 437 38; Check that store instructions are hoisted.39; CHECK-NOT: store