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@y = external global i32 4@z = external global i32 5 6; Function Attrs: nounwind ssp uwtable 7define void @foo(i32 %x) { 8; CHECK-LABEL: define void @foo( 9; CHECK-SAME: i32 [[X:%.*]]) { 10; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, ptr @y, align 4 11; CHECK-NEXT: br i1 false, label [[IF_THEN:%.*]], label [[ENTRY_IF_END_CRIT_EDGE:%.*]] 12; CHECK: entry.if.end_crit_edge: 13; CHECK-NEXT: br label [[IF_END:%.*]] 14; CHECK: if.then: 15; CHECK-NEXT: store i8 poison, ptr null, align 1 16; CHECK-NEXT: br label [[IF_END]] 17; CHECK: if.end: 18; CHECK-NEXT: tail call void @bar(i32 [[DOTPRE]]) 19; CHECK-NEXT: ret void 20; 21 22 %t = sub i32 %x, %x 23 %.pre = load i32, ptr @y, align 4 24 %cmp = icmp sgt i32 %t, 2 25 br i1 %cmp, label %if.then, label %entry.if.end_crit_edge 26 27entry.if.end_crit_edge: ; preds = %entry 28 br label %if.end 29 30if.then: ; preds = %entry 31 %add = add nsw i32 %x, 3 32 store i32 %add, ptr @y, align 4 33 br label %if.end 34 35if.end: ; preds = %entry.if.end_crit_edge, %if.then 36 %1 = phi i32 [ %.pre, %entry.if.end_crit_edge ], [ %add, %if.then ] 37 tail call void @bar(i32 %1) 38 ret void 39} 40 41define void @foo2(i32 %x) { 42; CHECK-LABEL: define void @foo2( 43; CHECK-SAME: i32 [[X:%.*]]) { 44; CHECK-NEXT: entry: 45; CHECK-NEXT: [[DOTPRE:%.*]] = load i32, ptr @y, align 4 46; CHECK-NEXT: br i1 false, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]] 47; CHECK: if.then: 48; CHECK-NEXT: store i8 poison, ptr null, align 1 49; CHECK-NEXT: br label [[IF_END:%.*]] 50; CHECK: if.else: 51; CHECK-NEXT: store i32 1, ptr @z, align 4 52; CHECK-NEXT: br label [[IF_END]] 53; CHECK: if.end: 54; CHECK-NEXT: tail call void @bar(i32 [[DOTPRE]]) 55; CHECK-NEXT: ret void 56; 57entry: 58 %t = sub i32 %x, %x 59 %.pre = load i32, ptr @y, align 4 60 %cmp = icmp sgt i32 %t, 2 61 br i1 %cmp, label %if.then, label %if.else 62 63if.then: ; preds = %entry 64 %add = add nsw i32 %x, 3 65 store i32 %add, ptr @y, align 4 66 br label %if.end 67 68if.else: ; preds = %entry 69 store i32 1, ptr @z, align 4 70 br label %if.end 71 72if.end: ; preds = %if.else, %if.then 73 %0 = phi i32 [ %.pre, %if.else ], [ %add, %if.then ] 74 tail call void @bar(i32 %0) 75 ret void 76} 77 78declare void @bar(i32) 79