llvm-6502/test/CodeGen/X86/use-add-flags.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00

58 lines
1.3 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s
; Reuse the flags value from the add instructions instead of emitting separate
; testl instructions.
; Use the flags on the add.
; CHECK-LABEL: test1:
; CHECK: addl
; CHECK-NOT: test
; CHECK: cmovnsl
; CHECK: ret
define i32 @test1(i32* %x, i32 %y, i32 %a, i32 %b) nounwind {
%tmp2 = load i32, i32* %x, align 4 ; <i32> [#uses=1]
%tmp4 = add i32 %tmp2, %y ; <i32> [#uses=1]
%tmp5 = icmp slt i32 %tmp4, 0 ; <i1> [#uses=1]
%tmp.0 = select i1 %tmp5, i32 %a, i32 %b ; <i32> [#uses=1]
ret i32 %tmp.0
}
declare void @foo(i32)
; Don't use the flags result of the and here, since the and has no
; other use. A simple test is better.
; CHECK-LABEL: test2:
; CHECK: testb $16, {{%dil|%cl}}
define void @test2(i32 %x) nounwind {
%y = and i32 %x, 16
%t = icmp eq i32 %y, 0
br i1 %t, label %true, label %false
true:
call void @foo(i32 %x)
ret void
false:
ret void
}
; Do use the flags result of the and here, since the and has another use.
; CHECK-LABEL: test3:
; CHECK: andl $16, %e
; CHECK-NEXT: jne
define void @test3(i32 %x) nounwind {
%y = and i32 %x, 16
%t = icmp eq i32 %y, 0
br i1 %t, label %true, label %false
true:
call void @foo(i32 %y)
ret void
false:
ret void
}