mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-30 15:32:52 +01:00
b6ed645cb6
indirect through a memory address is to load the memory address into a register and then call indirect through the register. This patch implements this improvement by modifying SelectionDAG to force a function address which is a memory reference to be loaded into a virtual register. Patch by Sriram Murali. llvm-svn: 178171
46 lines
1.2 KiB
LLVM
46 lines
1.2 KiB
LLVM
; RUN: llc < %s -mcpu=atom -mtriple=i686-linux | FileCheck -check-prefix=ATOM32 %s
|
|
; RUN: llc < %s -mcpu=core2 -mtriple=i686-linux | FileCheck -check-prefix=ATOM-NOT32 %s
|
|
; RUN: llc < %s -mcpu=atom -mtriple=x86_64-linux | FileCheck -check-prefix=ATOM64 %s
|
|
; RUN: llc < %s -mcpu=core2 -mtriple=x86_64-linux | FileCheck -check-prefix=ATOM-NOT64 %s
|
|
|
|
|
|
; fn_ptr.ll
|
|
%class.A = type { i32 (...)** }
|
|
|
|
define i32 @test1() #0 {
|
|
;ATOM: test1
|
|
entry:
|
|
%call = tail call %class.A* @_Z3facv()
|
|
%0 = bitcast %class.A* %call to void (%class.A*)***
|
|
%vtable = load void (%class.A*)*** %0, align 8
|
|
%1 = load void (%class.A*)** %vtable, align 8
|
|
;ATOM32: movl (%ecx), %ecx
|
|
;ATOM32: calll *%ecx
|
|
;ATOM-NOT32: calll *(%ecx)
|
|
;ATOM64: movq (%rcx), %rcx
|
|
;ATOM64: callq *%rcx
|
|
;ATOM-NOT64: callq *(%rcx)
|
|
tail call void %1(%class.A* %call)
|
|
ret i32 0
|
|
}
|
|
|
|
declare %class.A* @_Z3facv() #1
|
|
|
|
; virt_fn.ll
|
|
@p = external global void (i32)**
|
|
|
|
define i32 @test2() #0 {
|
|
;ATOM: test2
|
|
entry:
|
|
%0 = load void (i32)*** @p, align 8
|
|
%1 = load void (i32)** %0, align 8
|
|
;ATOM32: movl (%eax), %eax
|
|
;ATOM32: calll *%eax
|
|
;ATOM-NOT: calll *(%eax)
|
|
;ATOM64: movq (%rax), %rax
|
|
;ATOM64: callq *%rax
|
|
;ATOM-NOT64: callq *(%rax)
|
|
tail call void %1(i32 2)
|
|
ret i32 0
|
|
}
|