blob: a4675fba711292e2cbe53b6ce5155828807df7ee [file] [log] [blame]
Dan Gohman25d2a0d2015-09-08 12:39:25 +00001; RUN: llc < %s -asm-verbose=false | FileCheck %s
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Dan Gohman25d2a0d2015-09-08 12:39:25 +00003; Test that phis are lowered.
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Dan Gohman5e066842015-09-09 20:54:31 +00005target datalayout = "e-p:32:32-i64:64-n32:64-S128"
Dan Gohman25d2a0d2015-09-08 12:39:25 +00006target triple = "wasm32-unknown-unknown"
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Dan Gohman4f52e002015-09-09 00:52:47 +00008; Basic phi triangle.
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Dan Gohman25d2a0d2015-09-08 12:39:25 +000010; CHECK-LABEL: test0
11; CHECK: (setlocal [[REG:@.*]] (argument 0))
12; CHECK: (setlocal [[REG]] (sdiv [[REG]] {{.*}}))
13; CHECK: (return [[REG]])
14define i32 @test0(i32 %p) {
15entry:
16 %t = icmp slt i32 %p, 0
17 br i1 %t, label %true, label %done
18true:
19 %a = sdiv i32 %p, 3
20 br label %done
21done:
22 %s = phi i32 [ %a, %true ], [ %p, %entry ]
23 ret i32 %s
24}
Dan Gohman4f52e002015-09-09 00:52:47 +000025
26; Swap phis.
27
28; CHECK-LABEL: test1
Dan Gohman950a13c2015-09-16 16:51:30 +000029; CHECK: BB1_1:
Dan Gohman4f52e002015-09-09 00:52:47 +000030; CHECK: (setlocal [[REG0:@.*]] [[REG1:@.*]])
31; CHECK: (setlocal [[REG1]] [[REG2:@.*]])
32; CHECK: (setlocal [[REG2]] [[REG0]])
33define i32 @test1(i32 %n) {
34entry:
35 br label %loop
36
37loop:
38 %a = phi i32 [ 0, %entry ], [ %b, %loop ]
39 %b = phi i32 [ 1, %entry ], [ %a, %loop ]
40 %i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
41
42 %i.next = add i32 %i, 1
43 %t = icmp slt i32 %i.next, %n
44 br i1 %t, label %loop, label %exit
45
46exit:
47 ret i32 %a
48}