mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 06:30:19 +00:00
57fc82d409
in addition to ZERO_EXTEND and SIGN_EXTEND. Fix a bug in the way it checked for live-out values, and simplify the way it find users by using SDNode::use_iterator's (relatively) new features. Also, make it slightly more permissive on targets with free truncates. In SelectionDAGBuild, avoid creating ANY_EXTEND nodes that are larger than necessary. If the target's SwitchAmountTy has enough bits, use it. This exposes the truncate to optimization early, enabling more optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68670 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
2.0 KiB
LLVM
48 lines
2.0 KiB
LLVM
; RUN: llvm-as < %s | llc -march=x86-64 > %t
|
|
; RUN: grep mov %t | count 8
|
|
; RUN: not grep implicit %t
|
|
|
|
; Avoid partial register updates; don't define an i8 register and read
|
|
; the i32 super-register.
|
|
|
|
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"
|
|
target triple = "x86_64-apple-darwin9.6"
|
|
%struct.RC4_KEY = type { i8, i8, [256 x i8] }
|
|
|
|
define void @foo(%struct.RC4_KEY* nocapture %key, i64 %len, i8* %indata, i8* %outdata) nounwind {
|
|
entry:
|
|
br label %bb24
|
|
|
|
bb24: ; preds = %bb24, %entry
|
|
%0 = load i8* null, align 1 ; <i8> [#uses=1]
|
|
%1 = zext i8 %0 to i64 ; <i64> [#uses=1]
|
|
%2 = shl i64 %1, 32 ; <i64> [#uses=1]
|
|
%3 = getelementptr %struct.RC4_KEY* %key, i64 0, i32 2, i64 0 ; <i8*> [#uses=1]
|
|
%4 = load i8* %3, align 1 ; <i8> [#uses=2]
|
|
%5 = add i8 %4, 0 ; <i8> [#uses=2]
|
|
%6 = zext i8 %5 to i64 ; <i64> [#uses=0]
|
|
%7 = load i8* null, align 1 ; <i8> [#uses=1]
|
|
%8 = zext i8 %4 to i32 ; <i32> [#uses=1]
|
|
%9 = zext i8 %7 to i32 ; <i32> [#uses=1]
|
|
%10 = add i32 %9, %8 ; <i32> [#uses=1]
|
|
%11 = and i32 %10, 255 ; <i32> [#uses=1]
|
|
%12 = zext i32 %11 to i64 ; <i64> [#uses=1]
|
|
%13 = getelementptr %struct.RC4_KEY* %key, i64 0, i32 2, i64 %12 ; <i8*> [#uses=1]
|
|
%14 = load i8* %13, align 1 ; <i8> [#uses=1]
|
|
%15 = zext i8 %14 to i64 ; <i64> [#uses=1]
|
|
%16 = shl i64 %15, 48 ; <i64> [#uses=1]
|
|
%17 = getelementptr %struct.RC4_KEY* %key, i64 0, i32 2, i64 0 ; <i8*> [#uses=1]
|
|
%18 = load i8* %17, align 1 ; <i8> [#uses=2]
|
|
%19 = add i8 %18, %5 ; <i8> [#uses=1]
|
|
%20 = zext i8 %19 to i64 ; <i64> [#uses=1]
|
|
%21 = getelementptr %struct.RC4_KEY* %key, i64 0, i32 2, i64 %20 ; <i8*> [#uses=1]
|
|
store i8 %18, i8* %21, align 1
|
|
%22 = or i64 0, %2 ; <i64> [#uses=1]
|
|
%23 = or i64 %22, 0 ; <i64> [#uses=1]
|
|
%24 = or i64 %23, %16 ; <i64> [#uses=1]
|
|
%25 = or i64 %24, 0 ; <i64> [#uses=1]
|
|
%26 = xor i64 %25, 0 ; <i64> [#uses=1]
|
|
store i64 %26, i64* null, align 8
|
|
br label %bb24
|
|
}
|