| Dan Gohman | 25d2a0d | 2015-09-08 12:39:25 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -asm-verbose=false | FileCheck %s |
| 2 | |
| Dan Gohman | 25d2a0d | 2015-09-08 12:39:25 +0000 | [diff] [blame] | 3 | ; Test that phis are lowered. |
| 4 | |
| Dan Gohman | 5e06684 | 2015-09-09 20:54:31 +0000 | [diff] [blame] | 5 | target datalayout = "e-p:32:32-i64:64-n32:64-S128" |
| Dan Gohman | 25d2a0d | 2015-09-08 12:39:25 +0000 | [diff] [blame] | 6 | target triple = "wasm32-unknown-unknown" |
| 7 | |
| Dan Gohman | 4f52e00 | 2015-09-09 00:52:47 +0000 | [diff] [blame] | 8 | ; Basic phi triangle. |
| 9 | |
| Dan Gohman | e51c058 | 2015-10-06 00:27:55 +0000 | [diff] [blame] | 10 | ; CHECK-LABEL: test0: |
| 11 | ; CHECK: @0{{$}} |
| 12 | ; CHECK: set_local [[REG:@.*]], pop |
| 13 | ; CHECK: sdiv [[REG]], {{.*}} |
| 14 | ; CHECK: set_local [[REG]], pop |
| 15 | ; CHECK: return [[REG]] |
| Dan Gohman | 25d2a0d | 2015-09-08 12:39:25 +0000 | [diff] [blame] | 16 | define i32 @test0(i32 %p) { |
| 17 | entry: |
| 18 | %t = icmp slt i32 %p, 0 |
| 19 | br i1 %t, label %true, label %done |
| 20 | true: |
| 21 | %a = sdiv i32 %p, 3 |
| 22 | br label %done |
| 23 | done: |
| 24 | %s = phi i32 [ %a, %true ], [ %p, %entry ] |
| 25 | ret i32 %s |
| 26 | } |
| Dan Gohman | 4f52e00 | 2015-09-09 00:52:47 +0000 | [diff] [blame] | 27 | |
| 28 | ; Swap phis. |
| 29 | |
| Dan Gohman | e51c058 | 2015-10-06 00:27:55 +0000 | [diff] [blame] | 30 | ; CHECK-LABEL: test1: |
| Dan Gohman | 950a13c | 2015-09-16 16:51:30 +0000 | [diff] [blame] | 31 | ; CHECK: BB1_1: |
| Dan Gohman | e51c058 | 2015-10-06 00:27:55 +0000 | [diff] [blame] | 32 | ; CHECK: [[REG1:@.*]] |
| 33 | ; CHECK: set_local [[REG0:@.*]], pop |
| 34 | ; CHECK: [[REG2:@.*]] |
| 35 | ; CHECK: set_local [[REG1]], pop |
| 36 | ; CHECK: [[REG0]] |
| 37 | ; CHECK: set_local [[REG2]], pop |
| Dan Gohman | 4f52e00 | 2015-09-09 00:52:47 +0000 | [diff] [blame] | 38 | define i32 @test1(i32 %n) { |
| 39 | entry: |
| 40 | br label %loop |
| 41 | |
| 42 | loop: |
| 43 | %a = phi i32 [ 0, %entry ], [ %b, %loop ] |
| 44 | %b = phi i32 [ 1, %entry ], [ %a, %loop ] |
| 45 | %i = phi i32 [ 0, %entry ], [ %i.next, %loop ] |
| 46 | |
| 47 | %i.next = add i32 %i, 1 |
| 48 | %t = icmp slt i32 %i.next, %n |
| 49 | br i1 %t, label %loop, label %exit |
| 50 | |
| 51 | exit: |
| 52 | ret i32 %a |
| 53 | } |