llvm/test/CodeGen/X86/mcinst-lowering.ll
Daniel Dunbar 3f40b31256 MC/X86: Implement custom lowering to make sure we match things like
X86::ADC32ri $0, %eax
to
  X86::ADC32i32 $0

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104030 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18 17:22:24 +00:00

27 lines
972 B
LLVM

; RUN: llc --show-mc-encoding < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
define i32 @f0(i32* nocapture %x) nounwind readonly ssp {
entry:
%tmp1 = load i32* %x ; <i32> [#uses=2]
%tobool = icmp eq i32 %tmp1, 0 ; <i1> [#uses=1]
br i1 %tobool, label %if.end, label %return
if.end: ; preds = %entry
; Check that we lower to the short form of cmpl, which has a fixed %eax
; register.
;
; CHECK: cmpl $16777216, %eax
; CHECK: # encoding: [0x3d,0x00,0x00,0x00,0x01]
%cmp = icmp eq i32 %tmp1, 16777216 ; <i1> [#uses=1]
%conv = zext i1 %cmp to i32 ; <i32> [#uses=1]
ret i32 %conv
return: ; preds = %entry
ret i32 0
}