1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -passes=newgvn -S < %s | FileCheck %s 3 4target datalayout = "e-p:64:64:64" 5 6; GVN should ignore the store to p[1] to see that the load from p[0] is 7; fully redundant. 8 9define void @yes(i1 %c, ptr %p, ptr %q) nounwind { 10; CHECK-LABEL: define void @yes 11; CHECK-SAME: (i1 [[C:%.*]], ptr [[P:%.*]], ptr [[Q:%.*]]) #[[ATTR0:[0-9]+]] { 12; CHECK-NEXT: entry: 13; CHECK-NEXT: store i32 0, ptr [[P]], align 4 14; CHECK-NEXT: [[P1:%.*]] = getelementptr inbounds i32, ptr [[P]], i64 1 15; CHECK-NEXT: store i32 1, ptr [[P1]], align 4 16; CHECK-NEXT: br i1 [[C]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]] 17; CHECK: if.then: 18; CHECK-NEXT: store i32 0, ptr [[Q]], align 4 19; CHECK-NEXT: ret void 20; CHECK: if.else: 21; CHECK-NEXT: ret void 22; 23entry: 24 store i32 0, ptr %p 25 %p1 = getelementptr inbounds i32, ptr %p, i64 1 26 store i32 1, ptr %p1 27 br i1 %c, label %if.else, label %if.then 28 29if.then: 30 %t = load i32, ptr %p 31 store i32 %t, ptr %q 32 ret void 33 34if.else: 35 ret void 36} 37 38; GVN should ignore the store to p[1] to see that the first load from p[0] is 39; fully redundant. However, the second load is larger, so it's not a simple 40; redundancy. 41 42define void @watch_out_for_size_change(i1 %c, ptr %p, ptr %q) nounwind { 43; CHECK-LABEL: define void @watch_out_for_size_change 44; CHECK-SAME: (i1 [[C:%.*]], ptr [[P:%.*]], ptr [[Q:%.*]]) #[[ATTR0]] { 45; CHECK-NEXT: entry: 46; CHECK-NEXT: store i32 0, ptr [[P]], align 4 47; CHECK-NEXT: [[P1:%.*]] = getelementptr inbounds i32, ptr [[P]], i64 1 48; CHECK-NEXT: store i32 1, ptr [[P1]], align 4 49; CHECK-NEXT: br i1 [[C]], label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]] 50; CHECK: if.then: 51; CHECK-NEXT: store i32 0, ptr [[Q]], align 4 52; CHECK-NEXT: ret void 53; CHECK: if.else: 54; CHECK-NEXT: [[T64:%.*]] = load i64, ptr [[P]], align 4 55; CHECK-NEXT: store i64 [[T64]], ptr [[Q]], align 4 56; CHECK-NEXT: ret void 57; 58entry: 59 store i32 0, ptr %p 60 %p1 = getelementptr inbounds i32, ptr %p, i64 1 61 store i32 1, ptr %p1 62 br i1 %c, label %if.else, label %if.then 63 64if.then: 65 %t = load i32, ptr %p 66 store i32 %t, ptr %q 67 ret void 68 69if.else: 70 %t64 = load i64, ptr %p 71 store i64 %t64, ptr %q 72 ret void 73} 74