1; RUN: llc -march=hexagon -mcpu=hexagonv5 -hexagon-eif=0 -stop-after=if-converter < %s | FileCheck %s 2; Check that the edge weights are updated correctly after if-conversion. 3 4; CHECK: bb.3.if{{[0-9a-zA-Z.]*}}: 5; CHECK: successors: %bb.2(0x0ccccccd), %bb.1(0x73333333) 6@a = external global i32 7@d = external global i32 8 9; In the following CFG, A,B,C,D will be if-converted into a single block. 10; Check if the edge weights on edges to E and F are maintained correctly. 11; 12; A 13; / \ 14; B C 15; \ / 16; D 17; / \ 18; E F 19; 20define void @test1(i8 zeroext %la, i8 zeroext %lb) { 21entry: 22 %cmp0 = call i1 @pred() 23 br i1 %cmp0, label %if.else2, label %if.then0, !prof !1 24 25if.else2: 26 call void @bar(i32 2) 27 br label %if.end2 28 29if.end2: 30 call void @foo(i32 2) 31 br label %return 32 33if.end: 34 %storemerge = phi i32 [ %and, %if.else ], [ %shl, %if.then ] 35 store i32 %storemerge, i32* @a, align 4 36 %0 = load i32, i32* @d, align 4 37 %cmp2 = call i1 @pred() 38 br i1 %cmp2, label %if.end2, label %if.else2, !prof !2 39 40if.then0: 41 %cmp = icmp eq i8 %la, %lb 42 br i1 %cmp, label %if.then, label %if.else, !prof !1 43 44if.then: 45 %conv1 = zext i8 %la to i32 46 %shl = shl nuw nsw i32 %conv1, 16 47 br label %if.end 48 49if.else: 50 %and8 = and i8 %lb, %la 51 %and = zext i8 %and8 to i32 52 br label %if.end 53 54return: 55 call void @foo(i32 2) 56 ret void 57} 58 59declare void @foo(i32) 60declare void @bar(i32) 61declare i1 @pred() 62 63!1 = !{!"branch_weights", i32 80, i32 20} 64!2 = !{!"branch_weights", i32 10, i32 90} 65