68d2ce8e74
This patch replaces the delinearization function used in DA, switching from one that depends on type information in GEPs to one that does not. There are three types of changes in regression tests: improvements, degradations, and degradations but the related features will be removed. Since there were very few cases that are classified into the second category, I believe the impact of this change should be practically insignificant.
109 lines
4.2 KiB
LLVM
109 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -disable-output "-passes=print<da>" -aa-pipeline=basic-aa 2>&1 \
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; RUN: | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.6.0"
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; for (int i = 0; i < 100; ++i) {
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; int t0 = a[i][i];
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; int t1 = t0 + 1;
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; a[i][5] = t1;
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; }
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; The subscript 5 in a[i][5] is deliberately an i32, mismatching the types of
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; other subscript. DependenceAnalysis before the fix crashed due to this
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; mismatch.
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define void @i32_subscript(ptr %a, ptr %b) {
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; CHECK-LABEL: 'i32_subscript'
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; CHECK-NEXT: Src: %0 = load i32, ptr %a.addr, align 4 --> Dst: %0 = load i32, ptr %a.addr, align 4
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; CHECK-NEXT: da analyze - none!
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; CHECK-NEXT: Src: %0 = load i32, ptr %a.addr, align 4 --> Dst: store i32 %1, ptr %a.addr.2, align 4
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; CHECK-NEXT: da analyze - anti [0|<]!
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; CHECK-NEXT: Src: store i32 %1, ptr %a.addr.2, align 4 --> Dst: store i32 %1, ptr %a.addr.2, align 4
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; CHECK-NEXT: da analyze - none!
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;
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entry:
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.inc, %for.body ]
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%a.addr = getelementptr [100 x [100 x i32]], ptr %a, i64 0, i64 %i, i64 %i
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%a.addr.2 = getelementptr [100 x [100 x i32]], ptr %a, i64 0, i64 %i, i32 5
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%0 = load i32, ptr %a.addr, align 4
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%1 = add i32 %0, 1
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store i32 %1, ptr %a.addr.2, align 4
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%i.inc = add nsw i64 %i, 1
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%exitcond = icmp ne i64 %i.inc, 100
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br i1 %exitcond, label %for.body, label %for.end
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for.end:
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ret void
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}
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; unsigned i, j;
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; for (i = 1; i < SIZE; i++) {
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; for (j = i; j < SIZE; j++) {
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; a[i][j] = a[i+1][j-1] + 2;
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; }
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; }
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; Extends the previous example to coupled MIV subscripts.
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;
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; FIXME: Currently delinearization does not work as expected.
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@a = global [10004 x [10004 x i32]] zeroinitializer, align 16
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; Function Attrs: nounwind uwtable
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define void @coupled_miv_type_mismatch(i32 %n) {
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; CHECK-LABEL: 'coupled_miv_type_mismatch'
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; CHECK-NEXT: Src: %2 = load i32, ptr %arrayidx5, align 4 --> Dst: %2 = load i32, ptr %arrayidx5, align 4
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; CHECK-NEXT: da analyze - none!
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; CHECK-NEXT: Src: %2 = load i32, ptr %arrayidx5, align 4 --> Dst: store i32 %add6, ptr %arrayidx10, align 4
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; CHECK-NEXT: da analyze - anti [< >]!
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; CHECK-NEXT: Src: store i32 %add6, ptr %arrayidx10, align 4 --> Dst: store i32 %add6, ptr %arrayidx10, align 4
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; CHECK-NEXT: da analyze - none!
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;
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc11, %entry
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%indvars.iv11 = phi i64 [ %indvars.iv.next12, %for.inc11 ], [ 1, %entry ]
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%exitcond14 = icmp ne i64 %indvars.iv11, 10000
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br i1 %exitcond14, label %for.cond1.preheader, label %for.end13
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for.cond1.preheader: ; preds = %for.cond
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%0 = trunc i64 %indvars.iv11 to i32
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br label %for.cond1
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for.cond1: ; preds = %for.cond1.preheader, %for.body3
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%indvars.iv8 = phi i64 [ %indvars.iv11, %for.cond1.preheader ], [ %indvars.iv.next9, %for.body3 ]
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%j.0 = phi i32 [ %inc, %for.body3 ], [ %0, %for.cond1.preheader ]
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%lftr.wideiv = trunc i64 %indvars.iv8 to i32
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%exitcond = icmp ne i32 %lftr.wideiv, 10000
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br i1 %exitcond, label %for.body3, label %for.inc11
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for.body3: ; preds = %for.cond1
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%sub = add nsw i32 %j.0, -1
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%idxprom = zext i32 %sub to i64
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%1 = add nuw nsw i64 %indvars.iv11, 1
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%arrayidx5 = getelementptr inbounds [10004 x [10004 x i32]], ptr @a, i64 0, i64 %1, i64 %idxprom
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%2 = load i32, ptr %arrayidx5, align 4
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%add6 = add nsw i32 %2, 2
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%arrayidx10 = getelementptr inbounds [10004 x [10004 x i32]], ptr @a, i64 0, i64 %indvars.iv11, i64 %indvars.iv8
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store i32 %add6, ptr %arrayidx10, align 4
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%indvars.iv.next9 = add nuw nsw i64 %indvars.iv8, 1
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%inc = add nuw nsw i32 %j.0, 1
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br label %for.cond1
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for.inc11: ; preds = %for.cond1
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%indvars.iv.next12 = add nuw nsw i64 %indvars.iv11, 1
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br label %for.cond
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for.end13: ; preds = %for.cond
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ret void
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}
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.7.0"}
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