llvm-mirror/test/CodeGen/AArch64/ifcvt-select.ll
James Molloy fd13fd8906 [AArch64] Fixup test after r281160
How I missed this locally is beyond me. I suspect llc didn't recompile. This is just changing the CHECK line back to what it was before r280364.

llvm-svn: 281161
2016-09-11 08:24:04 +00:00

42 lines
1.1 KiB
LLVM

; RUN: llc -mtriple=arm64-apple-ios -mcpu=cyclone < %s | FileCheck %s
; Do not generate redundant select in early if-converstion pass.
define i32 @foo(i32 %a, i32 %b) {
entry:
;CHECK-LABEL: foo:
;CHECK: csinc
;CHECK-NOT: csel
%sub = sub nsw i32 %b, %a
%cmp10 = icmp sgt i32 %a, 0
br i1 %cmp10, label %while.body.lr.ph, label %while.end
while.body.lr.ph:
br label %while.body
while.body:
%j.012 = phi i32 [ %sub, %while.body.lr.ph ], [ %inc, %if.then ], [ %inc, %if.else ]
%i.011 = phi i32 [ %a, %while.body.lr.ph ], [ %inc2, %if.then ], [ %dec, %if.else ]
%cmp1 = icmp slt i32 %i.011, %j.012
br i1 %cmp1, label %while.end, label %while.cond
while.cond:
%inc = add nsw i32 %j.012, 5
%cmp2 = icmp slt i32 %inc, %b
br i1 %cmp2, label %if.then, label %if.else
if.then:
%inc2 = add nsw i32 %i.011, 1
br label %while.body
if.else:
%dec = add nsw i32 %i.011, -1
br label %while.body
while.end:
%j.0.lcssa = phi i32 [ %j.012, %while.body ], [ %sub, %entry ]
%i.0.lcssa = phi i32 [ %i.011, %while.body ], [ %a, %entry ]
%add = add nsw i32 %j.0.lcssa, %i.0.lcssa
ret i32 %add
}