mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
6f6923fd4f
"boolify" pointers, generating really awful code because getting the pointer value requires a load itself. Before: _foo: movb $1, _X.b ret _get: xorl %ecx, %ecx movb _X.b, %al testb %al, %al movl $_Y, %eax cmove %ecx, %eax ret With the xform disabled: _foo: movl $_Y, _X ret _get: movl _X, %eax ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66351 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
546 B
LLVM
18 lines
546 B
LLVM
; RUN: llvm-as < %s | opt -globalopt | llvm-dis | grep {@X = internal global i32}
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
|
|
target triple = "i386-apple-darwin7"
|
|
@X = internal global i32* null ; <i32**> [#uses=2]
|
|
@Y = internal global i32 0 ; <i32*> [#uses=1]
|
|
|
|
define void @foo() nounwind {
|
|
entry:
|
|
store i32* @Y, i32** @X, align 4
|
|
ret void
|
|
}
|
|
|
|
define i32* @get() nounwind {
|
|
entry:
|
|
%0 = load i32** @X, align 4 ; <i32*> [#uses=1]
|
|
ret i32* %0
|
|
}
|