mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-24 13:33:37 +02:00
b786938370
runnig LCSSA over them prior to running the loop pipeline. This also teaches the loop PM to verify that LCSSA form is preserved throughout the pipeline's run across the loop nest. Most of the test updates just leverage this new functionality. One has to be relaxed with the new PM as IVUsers is less powerful when it sees LCSSA input. Differential Revision: https://reviews.llvm.org/D28743 llvm-svn: 292241
48 lines
1.6 KiB
LLVM
48 lines
1.6 KiB
LLVM
; RUN: opt < %s -S -basicaa -licm | FileCheck %s
|
|
; RUN: opt -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
|
|
; This fixes PR22460
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-pc-windows-msvc"
|
|
|
|
@in = internal unnamed_addr global i32* null, align 8
|
|
@out = internal unnamed_addr global i32* null, align 8
|
|
|
|
; CHECK-LABEL: @bar
|
|
; CHECK: entry:
|
|
; CHECK: load i64, i64* bitcast (i32** @in to i64*)
|
|
; CHECK: do.body:
|
|
; CHECK-NOT: load
|
|
|
|
define i64 @bar(i32 %N) {
|
|
entry:
|
|
br label %do.body
|
|
|
|
do.body: ; preds = %l2, %entry
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %l2 ]
|
|
%total = phi i64 [ 0, %entry ], [ %next, %l2 ]
|
|
%c = icmp eq i32 %N, 6
|
|
br i1 %c, label %l1, label %do.body.l2_crit_edge
|
|
|
|
do.body.l2_crit_edge: ; preds = %do.body
|
|
%inval.pre = load i32*, i32** @in, align 8
|
|
br label %l2
|
|
|
|
l1: ; preds = %do.body
|
|
%v1 = load i64, i64* bitcast (i32** @in to i64*), align 8
|
|
store i64 %v1, i64* bitcast (i32** @out to i64*), align 8
|
|
%0 = inttoptr i64 %v1 to i32*
|
|
br label %l2
|
|
|
|
l2: ; preds = %do.body.l2_crit_edge, %l1
|
|
%inval = phi i32* [ %inval.pre, %do.body.l2_crit_edge ], [ %0, %l1 ]
|
|
%int = ptrtoint i32* %inval to i64
|
|
%next = add i64 %total, %int
|
|
%inc = add nsw i32 %i.0, 1
|
|
%cmp = icmp slt i32 %inc, %N
|
|
br i1 %cmp, label %do.body, label %do.end
|
|
|
|
do.end: ; preds = %l2
|
|
ret i64 %total
|
|
}
|