forked from OSchip/llvm-project
49 lines
1.1 KiB
LLVM
49 lines
1.1 KiB
LLVM
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -verify-machineinstrs | FileCheck %s
|
|
|
|
; Test that phis are lowered.
|
|
|
|
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
|
target triple = "wasm32-unknown-unknown"
|
|
|
|
; Basic phi triangle.
|
|
|
|
; CHECK-LABEL: test0:
|
|
; CHECK: return $0
|
|
; CHECK: div_s $push[[NUM0:[0-9]+]]=, $0, $pop[[NUM1:[0-9]+]]{{$}}
|
|
; CHECK: return $pop[[NUM0]]{{$}}
|
|
define i32 @test0(i32 %p) {
|
|
entry:
|
|
%t = icmp slt i32 %p, 0
|
|
br i1 %t, label %true, label %done
|
|
true:
|
|
%a = sdiv i32 %p, 3
|
|
br label %done
|
|
done:
|
|
%s = phi i32 [ %a, %true ], [ %p, %entry ]
|
|
ret i32 %s
|
|
}
|
|
|
|
; Swap phis.
|
|
|
|
; CHECK-LABEL: test1:
|
|
; CHECK: .LBB1_1:
|
|
; CHECK: copy_local $[[NUM0:[0-9]+]]=, $[[NUM1:[0-9]+]]{{$}}
|
|
; CHECK: copy_local $[[NUM1]]=, $[[NUM2:[0-9]+]]{{$}}
|
|
; CHECK: copy_local $[[NUM2]]=, $[[NUM0]]{{$}}
|
|
define i32 @test1(i32 %n) {
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%a = phi i32 [ 0, %entry ], [ %b, %loop ]
|
|
%b = phi i32 [ 1, %entry ], [ %a, %loop ]
|
|
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
|
|
|
|
%i.next = add i32 %i, 1
|
|
%t = icmp slt i32 %i.next, %n
|
|
br i1 %t, label %loop, label %exit
|
|
|
|
exit:
|
|
ret i32 %a
|
|
}
|