You've already forked linux-packaging-mono
69 lines
2.0 KiB
LLVM
69 lines
2.0 KiB
LLVM
|
; RUN: opt -loop-accesses -analyze -S < %s | FileCheck %s
|
||
|
|
; RUN: opt -passes='require<scalar-evolution>,require<aa>,loop(print-access-info)' -disable-output < %s 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
; This is the test case from PR26314.
|
||
|
|
; When we were retrying dependence checking with memchecks only,
|
||
|
|
; the loop-invariant access in the inner loop was incorrectly determined to be wrapping
|
||
|
|
; because it was not strided in the inner loop.
|
||
|
|
|
||
|
|
; #define Z 32
|
||
|
|
; typedef struct s {
|
||
|
|
; int v1[Z];
|
||
|
|
; int v2[Z];
|
||
|
|
; int v3[Z][Z];
|
||
|
|
; } s;
|
||
|
|
;
|
||
|
|
; void slow_function (s* const obj, int z) {
|
||
|
|
; for (int j=0; j<Z; j++) {
|
||
|
|
; for (int k=0; k<z; k++) {
|
||
|
|
; int x = obj->v1[k] + obj->v2[j];
|
||
|
|
; obj->v3[j][k] += x;
|
||
|
|
; }
|
||
|
|
; }
|
||
|
|
; }
|
||
|
|
|
||
|
|
; CHECK: function 'Test':
|
||
|
|
; CHECK: .inner:
|
||
|
|
; CHECK-NEXT: Memory dependences are safe
|
||
|
|
; CHECK-NEXT: Dependences:
|
||
|
|
; CHECK-NEXT: Run-time memory checks:
|
||
|
|
; CHECK: Check 0:
|
||
|
|
; CHECK: Check 1:
|
||
|
|
|
||
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||
|
|
target triple = "x86_64-unknown-linux-gnu"
|
||
|
|
|
||
|
|
%struct.s = type { [32 x i32], [32 x i32], [32 x [32 x i32]] }
|
||
|
|
|
||
|
|
define void @Test(%struct.s* nocapture %obj, i64 %z) #0 {
|
||
|
|
br label %.outer.preheader
|
||
|
|
|
||
|
|
|
||
|
|
.outer.preheader:
|
||
|
|
%i = phi i64 [ 0, %0 ], [ %i.next, %.outer ]
|
||
|
|
%1 = getelementptr inbounds %struct.s, %struct.s* %obj, i64 0, i32 1, i64 %i
|
||
|
|
br label %.inner
|
||
|
|
|
||
|
|
.exit:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
.outer:
|
||
|
|
%i.next = add nuw nsw i64 %i, 1
|
||
|
|
%exitcond.outer = icmp eq i64 %i.next, 32
|
||
|
|
br i1 %exitcond.outer, label %.exit, label %.outer.preheader
|
||
|
|
|
||
|
|
.inner:
|
||
|
|
%j = phi i64 [ 0, %.outer.preheader ], [ %j.next, %.inner ]
|
||
|
|
%2 = getelementptr inbounds %struct.s, %struct.s* %obj, i64 0, i32 0, i64 %j
|
||
|
|
%3 = load i32, i32* %2
|
||
|
|
%4 = load i32, i32* %1
|
||
|
|
%5 = add nsw i32 %4, %3
|
||
|
|
%6 = getelementptr inbounds %struct.s, %struct.s* %obj, i64 0, i32 2, i64 %i, i64 %j
|
||
|
|
%7 = load i32, i32* %6
|
||
|
|
%8 = add nsw i32 %5, %7
|
||
|
|
store i32 %8, i32* %6
|
||
|
|
%j.next = add nuw nsw i64 %j, 1
|
||
|
|
%exitcond.inner = icmp eq i64 %j.next, %z
|
||
|
|
br i1 %exitcond.inner, label %.outer, label %.inner
|
||
|
|
}
|