mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
091acf253b
On PowerPC, which has a full set of logical operations on (its multiple sets of) condition-register bits, it is not profitable to break of complex conditions feeding a jump into multiple jumps. We can turn off this feature of CGP/SDAGBuilder by marking jumps as "expensive". P7 test-suite speedups (no regressions): MultiSource/Benchmarks/FreeBench/pcompress2/pcompress2 -0.626647% +/- 0.323583% MultiSource/Benchmarks/Olden/power/power -18.2821% +/- 8.06481% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228895 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
902 B
LLVM
37 lines
902 B
LLVM
; RUN: llc -mcpu=pwr7 < %s | FileCheck %s
|
|
target datalayout = "E-m:e-i64:64-n32:64"
|
|
target triple = "powerpc64-unknown-linux-gnu"
|
|
|
|
; Function Attrs: nounwind
|
|
define void @foo(i32 signext %a, i32 signext %b) #0 {
|
|
entry:
|
|
%cmp = icmp sgt i32 %a, 5
|
|
%cmp1 = icmp slt i32 %b, 3
|
|
%or.cond = or i1 %cmp, %cmp1
|
|
br i1 %or.cond, label %if.then, label %if.else
|
|
|
|
; CHECK-LABEL: @foo
|
|
; CHECK: cmpwi
|
|
; CHECK: cmpwi
|
|
; CHECK: cror
|
|
; CHECK: blr
|
|
|
|
if.then: ; preds = %entry
|
|
tail call void bitcast (void (...)* @bar to void ()*)() #0
|
|
br label %if.end
|
|
|
|
if.else: ; preds = %entry
|
|
tail call void bitcast (void (...)* @car to void ()*)() #0
|
|
br label %if.end
|
|
|
|
if.end: ; preds = %if.else, %if.then
|
|
ret void
|
|
}
|
|
|
|
declare void @bar(...)
|
|
|
|
declare void @car(...)
|
|
|
|
attributes #0 = { nounwind }
|
|
|