6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-25 13:24:46 +00:00
Code Issues Projects Releases Wiki Activity

Disable each MachineFunctionPass for 'optnone' functions, unless that

Browse Source 
pass normally runs at optimization level None, or is part of the
register allocation pipeline.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205228 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Paul Robinson
2014-03-31 17:43:35 +00:00
parent b6f3f9ba45
commit 5fa58a5b23
15 changed files with 96 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
test/Feature/optnone-llc.ll Normal file
View File

@@ -0,0 +1,54 @@
; RUN: llc -O0 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-O0
; RUN: llc -O1 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox
; RUN: llc -O2 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox
; RUN: llc -O3 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox
; RUN: llc -misched-postra -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-MORE
; REQUIRES: asserts
; This test verifies that we don't run Machine Function optimizations
; on optnone functions.
; Function Attrs: noinline optnone
define i32 @_Z3fooi(i32 %x) #0 {
entry:
%x.addr = alloca i32, align 4
store i32 %x, i32* %x.addr, align 4
br label %while.cond
while.cond: ; preds = %while.body, %entry
%0 = load i32* %x.addr, align 4
%dec = add nsw i32 %0, -1
store i32 %dec, i32* %x.addr, align 4
%tobool = icmp ne i32 %0, 0
br i1 %tobool, label %while.body, label %while.end
while.body: ; preds = %while.cond
br label %while.cond
while.end: ; preds = %while.cond
ret i32 0
}
attributes #0 = { optnone noinline }
; Nothing that runs at -O0 gets skipped.
; LLC-O0-NOT: Skipping pass
; Machine Function passes run at -O1 and higher.
; LLC-Ox-DAG: Skipping pass 'Branch Probability Basic Block Placement'
; LLC-Ox-DAG: Skipping pass 'CodeGen Prepare'
; LLC-Ox-DAG: Skipping pass 'Control Flow Optimizer'
; LLC-Ox-DAG: Skipping pass 'Machine code sinking'
; LLC-Ox-DAG: Skipping pass 'Machine Common Subexpression Elimination'
; LLC-Ox-DAG: Skipping pass 'Machine Copy Propagation Pass'
; LLC-Ox-DAG: Skipping pass 'Machine Loop Invariant Code Motion'
; LLC-Ox-DAG: Skipping pass 'Merge disjoint stack slots'
; LLC-Ox-DAG: Skipping pass 'Optimize machine instruction PHIs'
; LLC-Ox-DAG: Skipping pass 'Peephole Optimizations'
; LLC-Ox-DAG: Skipping pass 'Post RA top-down list latency scheduler'
; LLC-Ox-DAG: Skipping pass 'Remove dead machine instructions'
; LLC-Ox-DAG: Skipping pass 'Tail Duplication'
; Alternate post-RA scheduler.
; LLC-MORE: Skipping pass 'PostRA Machine Instruction Scheduler'