forked from OSchip/llvm-project
109 lines
4.6 KiB
LLVM
109 lines
4.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -loop-interchange -S < %s | FileCheck %s
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; Test cases for PR43473.
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; In the 2 test cases below, we have a LCSSA PHI in the inner loop exit, which
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; is used in the outer loop latch. This is not supported.
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define void @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
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; CHECK: outer.header:
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; CHECK-NEXT: [[OUTER_IV:%.*]] = phi i64 [ undef, [[ENTRY:%.*]] ], [ [[OUTER_IV_NEXT:%.*]], [[OUTER_LATCH:%.*]] ]
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; CHECK-NEXT: [[IDX:%.*]] = getelementptr inbounds double, double* undef, i64 [[OUTER_IV]]
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; CHECK-NEXT: br label [[INNER:%.*]]
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; CHECK: inner:
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; CHECK-NEXT: [[INNER_IV:%.*]] = phi i64 [ 0, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = load double, double* [[IDX]], align 8
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; CHECK-NEXT: store double undef, double* [[IDX]], align 8
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; CHECK-NEXT: [[INNER_IV_NEXT]] = add nuw nsw i64 [[INNER_IV]], 1
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; CHECK-NEXT: br i1 false, label [[INNER]], label [[OUTER_LATCH]]
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; CHECK: outer.latch:
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; CHECK-NEXT: [[INC43_LCSSA_WIDE_US:%.*]] = phi i64 [ [[INNER_IV_NEXT]], [[INNER]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[INC43_LCSSA_WIDE_US]] to i32
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; CHECK-NEXT: [[OUTER_IV_NEXT]] = add nsw i64 [[OUTER_IV]], 1
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; CHECK-NEXT: br i1 false, label [[OUTER_HEADER]], label [[OUTER_EXIT:%.*]]
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; CHECK: outer.exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %outer.header
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outer.header: ; preds = %for.cond26.for.end44_crit_edge.us, %entry
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%outer.iv = phi i64 [ undef, %entry ], [ %outer.iv.next, %outer.latch ]
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%idx = getelementptr inbounds double, double* undef, i64 %outer.iv
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br label %inner
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inner: ; preds = %for.body28.us, %for.body25.us
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%inner.iv = phi i64 [ 0, %outer.header ], [ %inner.iv.next, %inner ]
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%0 = load double, double* %idx, align 8
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store double undef, double* %idx, align 8
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%inner.iv.next = add nuw nsw i64 %inner.iv, 1
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br i1 undef, label %inner, label %outer.latch
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outer.latch: ; preds = %inner
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%inc43.lcssa.wide.us = phi i64 [ %inner.iv.next, %inner ]
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%1 = trunc i64 %inc43.lcssa.wide.us to i32
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%outer.iv.next = add nsw i64 %outer.iv, 1
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br i1 undef, label %outer.header, label %outer.exit
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outer.exit: ; preds = %for.cond26.for.end44_crit_edge.us
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ret void
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}
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; Same as @test1, but with a dedicated inner loop exit block.
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define void @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
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; CHECK: outer.header:
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; CHECK-NEXT: [[OUTER_IV:%.*]] = phi i64 [ undef, [[ENTRY:%.*]] ], [ [[OUTER_IV_NEXT:%.*]], [[OUTER_LATCH:%.*]] ]
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; CHECK-NEXT: [[IDX:%.*]] = getelementptr inbounds double, double* undef, i64 [[OUTER_IV]]
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; CHECK-NEXT: br label [[INNER:%.*]]
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; CHECK: inner:
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; CHECK-NEXT: [[INNER_IV:%.*]] = phi i64 [ 0, [[OUTER_HEADER]] ], [ [[INNER_IV_NEXT:%.*]], [[INNER]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = load double, double* [[IDX]], align 8
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; CHECK-NEXT: store double undef, double* [[IDX]], align 8
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; CHECK-NEXT: [[INNER_IV_NEXT]] = add nuw nsw i64 [[INNER_IV]], 1
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; CHECK-NEXT: br i1 false, label [[INNER]], label [[INNER_EXIT:%.*]]
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; CHECK: inner.exit:
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; CHECK-NEXT: [[INC43_LCSSA_WIDE_US:%.*]] = phi i64 [ [[INNER_IV_NEXT]], [[INNER]] ]
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; CHECK-NEXT: br label [[OUTER_LATCH]]
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; CHECK: outer.latch:
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; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[INC43_LCSSA_WIDE_US]] to i32
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; CHECK-NEXT: [[OUTER_IV_NEXT]] = add nsw i64 [[OUTER_IV]], 1
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; CHECK-NEXT: br i1 false, label [[OUTER_HEADER]], label [[OUTER_EXIT:%.*]]
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; CHECK: outer.exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %outer.header
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outer.header: ; preds = %for.cond26.for.end44_crit_edge.us, %entry
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%outer.iv = phi i64 [ undef, %entry ], [ %outer.iv.next, %outer.latch ]
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%idx = getelementptr inbounds double, double* undef, i64 %outer.iv
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br label %inner
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inner: ; preds = %for.body28.us, %for.body25.us
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%inner.iv = phi i64 [ 0, %outer.header ], [ %inner.iv.next, %inner ]
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%0 = load double, double* %idx, align 8
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store double undef, double* %idx, align 8
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%inner.iv.next = add nuw nsw i64 %inner.iv, 1
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br i1 undef, label %inner, label %inner.exit
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inner.exit:
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%inc43.lcssa.wide.us = phi i64 [ %inner.iv.next, %inner ]
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br label %outer.latch
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outer.latch: ; preds = %inner
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%1 = trunc i64 %inc43.lcssa.wide.us to i32
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%outer.iv.next = add nsw i64 %outer.iv, 1
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br i1 undef, label %outer.header, label %outer.exit
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outer.exit: ; preds = %for.cond26.for.end44_crit_edge.us
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ret void
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}
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