1 ; RUN: opt < %s -basicaa -gvn -enable-load-pre -S | FileCheck %s 2 ; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -enable-load-pre -S | FileCheck %s 3 4 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" 5 target triple = "aarch64--linux-gnu" 6 7 define double @foo(i32 %stat, i32 %i, double** %p) { 8 ; CHECK-LABEL: @foo( 9 entry: 10 switch i32 %stat, label %sw.default [ 11 i32 0, label %sw.bb 12 i32 1, label %sw.bb 13 i32 2, label %sw.bb2 14 ] 15 16 sw.bb: ; preds = %entry, %entry 17 %idxprom = sext i32 %i to i64 18 %arrayidx = getelementptr inbounds double*, double** %p, i64 0 19 %0 = load double*, double** %arrayidx, align 8 20 %arrayidx1 = getelementptr inbounds double, double* %0, i64 %idxprom 21 %1 = load double, double* %arrayidx1, align 8 22 %sub = fsub double %1, 1.000000e+00 23 %cmp = fcmp olt double %sub, 0.000000e+00 24 br i1 %cmp, label %if.then, label %if.end 25 26 if.then: ; preds = %sw.bb 27 br label %return 28 29 if.end: ; preds = %sw.bb 30 br label %sw.bb2 31 32 sw.bb2: ; preds = %if.end, %entry 33 %idxprom3 = sext i32 %i to i64 34 %arrayidx4 = getelementptr inbounds double*, double** %p, i64 0 35 %2 = load double*, double** %arrayidx4, align 8 36 %arrayidx5 = getelementptr inbounds double, double* %2, i64 %idxprom3 37 %3 = load double, double* %arrayidx5, align 8 38 ; CHECK: sw.bb2: 39 ; CHECK-NOT: sext 40 ; CHECK-NEXT: phi double [ 41 ; CHECK-NOT: load 42 %sub6 = fsub double 3.000000e+00, %3 43 br label %return 44 45 sw.default: ; preds = %entry 46 br label %return 47 48 return: ; preds = %sw.default, %sw.bb2, %if.then 49 %retval.0 = phi double [ 0.000000e+00, %sw.default ], [ %sub6, %sw.bb2 ], [ %sub, %if.then ] 50 ret double %retval.0 51 } 52 53 ; The load causes the GEP's operands to be PREd earlier than normal. The 54 ; resulting sext ends up in pre.dest and in the GVN system before that BB is 55 ; actually processed. Make sure we can deal with the situation. 56 57 define void @test_shortcut_safe(i1 %tst, i32 %p1, i32* %a) { 58 ; CHECK-LABEL: define void @test_shortcut_safe 59 ; CHECK: [[SEXT1:%.*]] = sext i32 %p1 to i64 60 ; CHECK: [[PHI1:%.*]] = phi i64 [ [[SEXT1]], {{%.*}} ], [ [[PHI2:%.*]], {{%.*}} ] 61 ; CHECK: [[SEXT2:%.*]] = sext i32 %p1 to i64 62 ; CHECK: [[PHI2]] = phi i64 [ [[SEXT2]], {{.*}} ], [ [[PHI1]], {{%.*}} ] 63 ; CHECK: getelementptr inbounds i32, i32* %a, i64 [[PHI2]] 64 65 br i1 %tst, label %sext1, label %pre.dest 66 67 pre.dest: 68 br label %sext.use 69 70 sext1: 71 %idxprom = sext i32 %p1 to i64 72 br label %sext.use 73 74 sext.use: 75 %idxprom2 = sext i32 %p1 to i64 76 %arrayidx3 = getelementptr inbounds i32, i32* %a, i64 %idxprom2 77 %val = load i32, i32* %arrayidx3, align 4 78 tail call void (i32) @g(i32 %val) 79 br label %pre.dest 80 } 81 82 declare void @g(i32) 83
