1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -passes=newgvn -S < %s | FileCheck %s 3 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-f128:128:128-n8:16:32:64" 5 6; GVN shouldn't PRE the load around the loop backedge because it's 7; not actually redundant around the loop backedge, despite appearances 8; if phi-translation is ignored. 9 10define void @test0(ptr %begin) { 11; CHECK-LABEL: define void @test0( 12; CHECK-SAME: ptr [[BEGIN:%.*]]) { 13; CHECK-NEXT: entry: 14; CHECK-NEXT: br label [[LOOP:%.*]] 15; CHECK: loop: 16; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ [[BEGIN]], [[ENTRY:%.*]] ], [ [[NEXT:%.*]], [[LOOP]] ] 17; CHECK-NEXT: [[L0:%.*]] = load i8, ptr [[PHI]], align 1 18; CHECK-NEXT: call void @bar(i8 [[L0]]) 19; CHECK-NEXT: [[L1:%.*]] = load i8, ptr [[PHI]], align 1 20; CHECK-NEXT: [[NEXT]] = getelementptr inbounds i8, ptr [[PHI]], i8 [[L1]] 21; CHECK-NEXT: br label [[LOOP]] 22; 23entry: 24 br label %loop 25 26loop: 27 %phi = phi ptr [ %begin, %entry ], [ %next, %loop ] 28 %l0 = load i8, ptr %phi 29 call void @bar(i8 %l0) 30 %l1 = load i8, ptr %phi 31 %next = getelementptr inbounds i8, ptr %phi, i8 %l1 32 br label %loop 33} 34 35declare void @bar(i8) 36