bb2791609d
UpdateTestChecks has a make_analyzer_generalizer to replace pointer addressess from the debug output of LAA with a pattern, which is an acceptable solution when there is one RUN line. However, when there are multiple RUN lines with a common pattern, UTC fails to recognize common output due to mismatched pointer addresses. Instead of hacking UTC scrub the output before comparing the outputs from the different RUN lines, fix the issue once and for all by making LAA not output unstable pointer addresses in the first place. The removal of the now-dead make_analyzer_generalizer is left as a non-trivial exercise for a follow-up.
101 lines
3.8 KiB
LLVM
101 lines
3.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes='print<access-info>' -disable-output < %s 2>&1 | FileCheck %s
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; This is the test case from PR26314.
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; When we were retrying dependence checking with memchecks only,
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; the loop-invariant access in the inner loop was incorrectly determined to be wrapping
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; because it was not strided in the inner loop.
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; #define Z 32
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; typedef struct s {
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; int v1[Z];
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; int v2[Z];
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; int v3[Z][Z];
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; } s;
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;
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; void slow_function (s* const obj, int z) {
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; for (int j=0; j<Z; j++) {
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; for (int k=0; k<z; k++) {
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; int x = obj->v1[k] + obj->v2[j];
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; obj->v3[j][k] += x;
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; }
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; }
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; }
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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%struct.s = type { [32 x i32], [32 x i32], [32 x [32 x i32]] }
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define void @Test(ptr nocapture %obj, i64 %z) #0 {
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; CHECK-LABEL: 'Test'
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; CHECK-NEXT: .inner:
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; CHECK-NEXT: Memory dependences are safe with a maximum safe vector width of 2048 bits with run-time checks
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Check 0:
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; CHECK-NEXT: Comparing group GRP0:
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; CHECK-NEXT: %6 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 2, i64 %i, i64 %j
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; CHECK-NEXT: Against group GRP1:
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; CHECK-NEXT: %2 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 0, i64 %j
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; CHECK-NEXT: Check 1:
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; CHECK-NEXT: Comparing group GRP0:
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; CHECK-NEXT: %6 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 2, i64 %i, i64 %j
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; CHECK-NEXT: Against group GRP2:
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; CHECK-NEXT: %1 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 1, i64 %i
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; CHECK-NEXT: Grouped accesses:
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; CHECK-NEXT: Group GRP0:
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; CHECK-NEXT: (Low: {(256 + %obj)<nuw>,+,128}<nuw><%.outer.preheader> High: {(256 + (4 * %z) + %obj),+,128}<nw><%.outer.preheader>)
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; CHECK-NEXT: Member: {{\{\{}}(256 + %obj)<nuw>,+,128}<nuw><%.outer.preheader>,+,4}<nuw><%.inner>
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; CHECK-NEXT: Group GRP1:
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; CHECK-NEXT: (Low: %obj High: ((4 * %z) + %obj))
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; CHECK-NEXT: Member: {%obj,+,4}<nuw><%.inner>
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; CHECK-NEXT: Group GRP2:
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; CHECK-NEXT: (Low: {(128 + %obj)<nuw>,+,4}<nuw><%.outer.preheader> High: {(132 + %obj),+,4}<nw><%.outer.preheader>)
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; CHECK-NEXT: Member: {(128 + %obj)<nuw>,+,4}<nuw><%.outer.preheader>
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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; CHECK-NEXT: .outer.preheader:
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; CHECK-NEXT: Report: loop is not the innermost loop
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; CHECK-NEXT: Dependences:
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; CHECK-NEXT: Run-time memory checks:
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; CHECK-NEXT: Grouped accesses:
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; CHECK-EMPTY:
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; CHECK-NEXT: Non vectorizable stores to invariant address were not found in loop.
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; CHECK-NEXT: SCEV assumptions:
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; CHECK-EMPTY:
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; CHECK-NEXT: Expressions re-written:
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;
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br label %.outer.preheader
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.outer.preheader:
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%i = phi i64 [ 0, %0 ], [ %i.next, %.outer ]
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%1 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 1, i64 %i
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br label %.inner
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.exit:
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ret void
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.outer:
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%i.next = add nuw nsw i64 %i, 1
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%exitcond.outer = icmp eq i64 %i.next, 32
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br i1 %exitcond.outer, label %.exit, label %.outer.preheader
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.inner:
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%j = phi i64 [ 0, %.outer.preheader ], [ %j.next, %.inner ]
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%2 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 0, i64 %j
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%3 = load i32, ptr %2
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%4 = load i32, ptr %1
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%5 = add nsw i32 %4, %3
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%6 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 2, i64 %i, i64 %j
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%7 = load i32, ptr %6
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%8 = add nsw i32 %5, %7
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store i32 %8, ptr %6
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%j.next = add nuw nsw i64 %j, 1
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%exitcond.inner = icmp eq i64 %j.next, %z
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br i1 %exitcond.inner, label %.outer, label %.inner
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}
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