mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-30 02:32:08 +00:00
e4dc717585
OnlyReadsMemoryFns tables are dead! We get more, and more accurate, information from gcc via the readnone and readonly function attributes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44288 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
602 B
LLVM
21 lines
602 B
LLVM
; RUN: llvm-as < %s | opt -globalsmodref-aa -load-vn -gcse | llvm-dis | not grep load
|
|
|
|
; This test requires the use of previous analyses to determine that
|
|
; doesnotmodX does not modify X (because 'sin' doesn't).
|
|
|
|
@X = internal global i32 4 ; <i32*> [#uses=2]
|
|
|
|
declare double @sin(double) readnone
|
|
|
|
define i32 @test(i32* %P) {
|
|
store i32 12, i32* @X
|
|
call double @doesnotmodX( double 1.000000e+00 ) ; <double>:1 [#uses=0]
|
|
%V = load i32* @X ; <i32> [#uses=1]
|
|
ret i32 %V
|
|
}
|
|
|
|
define double @doesnotmodX(double %V) {
|
|
%V2 = call double @sin( double %V ) readnone ; <double> [#uses=1]
|
|
ret double %V2
|
|
}
|