llvm-mirror/test/CodeGen/AArch64/analyzecmp.ll
James Molloy d75793f030 [SimplifyCFG] Be more aggressive
Up the phi node folding threshold from a cheap "1" to a meagre "2".

Update tests for extra added selects and slight code churn.

llvm-svn: 229099
2015-02-13 10:48:30 +00:00

33 lines
802 B
LLVM

; RUN: llc -O3 -mcpu=cortex-a57 < %s | FileCheck %s
; CHECK-LABEL: @test
; CHECK: and
; CHECK: csel
; CHECK: csel
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
target triple = "arm64--linux-gnueabi"
define void @test(i64 %a, i64* %ptr1, i64* %ptr2) #0 align 2 {
entry:
%conv = and i64 %a, 4294967295
%add = add nsw i64 %conv, -1
%div = sdiv i64 %add, 64
%rem = srem i64 %add, 64
%cmp = icmp slt i64 %rem, 0
br i1 %cmp, label %if.then, label %exit
if.then:
%add2 = add nsw i64 %rem, 64
%add3 = add i64 %div, -1
br label %exit
exit:
%__n = phi i64 [ %add3, %if.then ], [ %div, %entry ]
%__n.0 = phi i64 [ %add2, %if.then ], [ %rem, %entry ]
store i64 %__n, i64* %ptr1
store i64 %__n.0, i64* %ptr2
ret void
}