1 ; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-block-placement | FileCheck %s 2 3 ; Test irreducible CFG handling. 4 5 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" 6 target triple = "wasm32-unknown-unknown" 7 8 ; A simple loop with two entries. 9 10 ; CHECK-LABEL: test0: 11 ; CHECK: f64.load 12 ; CHECK: i32.const $[[REG:[^,]+]]=, 0{{$}} 13 ; CHECK: br_table $[[REG]], 14 define void @test0(double* %arg, i32 %arg1, i32 %arg2, i32 %arg3) { 15 bb: 16 %tmp = icmp eq i32 %arg2, 0 17 br i1 %tmp, label %bb6, label %bb3 18 19 bb3: 20 %tmp4 = getelementptr double, double* %arg, i32 %arg3 21 %tmp5 = load double, double* %tmp4, align 4 22 br label %bb13 23 24 bb6: 25 %tmp7 = phi i32 [ %tmp18, %bb13 ], [ 0, %bb ] 26 %tmp8 = icmp slt i32 %tmp7, %arg1 27 br i1 %tmp8, label %bb9, label %bb19 28 29 bb9: 30 %tmp10 = getelementptr double, double* %arg, i32 %tmp7 31 %tmp11 = load double, double* %tmp10, align 4 32 %tmp12 = fmul double %tmp11, 2.300000e+00 33 store double %tmp12, double* %tmp10, align 4 34 br label %bb13 35 36 bb13: 37 %tmp14 = phi double [ %tmp5, %bb3 ], [ %tmp12, %bb9 ] 38 %tmp15 = phi i32 [ undef, %bb3 ], [ %tmp7, %bb9 ] 39 %tmp16 = getelementptr double, double* %arg, i32 %tmp15 40 %tmp17 = fadd double %tmp14, 1.300000e+00 41 store double %tmp17, double* %tmp16, align 4 42 %tmp18 = add nsw i32 %tmp15, 1 43 br label %bb6 44 45 bb19: 46 ret void 47 } 48 49 ; A simple loop with two entries and an inner natural loop. 50 51 ; CHECK-LABEL: test1: 52 ; CHECK: f64.load 53 ; CHECK: i32.const $[[REG:[^,]+]]=, 0{{$}} 54 ; CHECK: br_table $[[REG]], 55 define void @test1(double* %arg, i32 %arg1, i32 %arg2, i32 %arg3) { 56 bb: 57 %tmp = icmp eq i32 %arg2, 0 58 br i1 %tmp, label %bb6, label %bb3 59 60 bb3: 61 %tmp4 = getelementptr double, double* %arg, i32 %arg3 62 %tmp5 = load double, double* %tmp4, align 4 63 br label %bb13 64 65 bb6: 66 %tmp7 = phi i32 [ %tmp18, %bb13 ], [ 0, %bb ] 67 %tmp8 = icmp slt i32 %tmp7, %arg1 68 br i1 %tmp8, label %bb9, label %bb19 69 70 bb9: 71 %tmp10 = getelementptr double, double* %arg, i32 %tmp7 72 %tmp11 = load double, double* %tmp10, align 4 73 %tmp12 = fmul double %tmp11, 2.300000e+00 74 store double %tmp12, double* %tmp10, align 4 75 br label %bb10 76 77 bb10: 78 %p = phi i32 [ 0, %bb9 ], [ %pn, %bb10 ] 79 %pn = add i32 %p, 1 80 %c = icmp slt i32 %pn, 256 81 br i1 %c, label %bb10, label %bb13 82 83 bb13: 84 %tmp14 = phi double [ %tmp5, %bb3 ], [ %tmp12, %bb10 ] 85 %tmp15 = phi i32 [ undef, %bb3 ], [ %tmp7, %bb10 ] 86 %tmp16 = getelementptr double, double* %arg, i32 %tmp15 87 %tmp17 = fadd double %tmp14, 1.300000e+00 88 store double %tmp17, double* %tmp16, align 4 89 %tmp18 = add nsw i32 %tmp15, 1 90 br label %bb6 91 92 bb19: 93 ret void 94 } 95
