mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 15:11:24 +00:00
81a6995243
This makes it possible to speed up def_iterator by stopping at the first use. This makes def_empty() and getUniqueVRegDef() much faster when there are many uses. In a +Asserts build, LiveVariables is 100x faster in one case because getVRegDef() has an assertion that would scan to the end of a def_iterator chain. Spill weight calculation is significantly faster (300x in one case) because isTriviallyReMaterializable() calls MRI->isConstantPhysReg(%RIP) which calls def_empty(%RIP). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161634 91177308-0d34-0410-b5e6-96231b3b80d8
36 lines
930 B
LLVM
36 lines
930 B
LLVM
; RUN: llc < %s -mtriple=x86_64-linux -mattr=+sse3 | FileCheck %s
|
|
; RUN: llc < %s -mtriple=x86_64-win32 -mattr=+sse3 | FileCheck %s -check-prefix=WIN64
|
|
; PR8573
|
|
|
|
; CHECK: foo:
|
|
; CHECK: leaq (%rdi), %rax
|
|
; CHECK-NEXT: movl %esi, %ecx
|
|
; CHECK-NEXT: monitor
|
|
; WIN64: foo:
|
|
; WIN64: leaq (%rcx), %rax
|
|
; WIN64-NEXT: movl %edx, %ecx
|
|
; WIN64-NEXT: movl %r8d, %edx
|
|
; WIN64-NEXT: monitor
|
|
define void @foo(i8* %P, i32 %E, i32 %H) nounwind {
|
|
entry:
|
|
tail call void @llvm.x86.sse3.monitor(i8* %P, i32 %E, i32 %H)
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.x86.sse3.monitor(i8*, i32, i32) nounwind
|
|
|
|
; CHECK: bar:
|
|
; CHECK: movl %edi, %ecx
|
|
; CHECK-NEXT: movl %esi, %eax
|
|
; CHECK-NEXT: mwait
|
|
; WIN64: bar:
|
|
; WIN64: movl %edx, %eax
|
|
; WIN64-NEXT: mwait
|
|
define void @bar(i32 %E, i32 %H) nounwind {
|
|
entry:
|
|
tail call void @llvm.x86.sse3.mwait(i32 %E, i32 %H)
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.x86.sse3.mwait(i32, i32) nounwind
|