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46 lines
1006 B
LLVM
46 lines
1006 B
LLVM
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; RUN: opt < %s -indvars -S | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; CHECK-LABEL: @foo
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define void @foo() {
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entry:
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br label %L1_header
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L1_header:
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br label %L2_header
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; CHECK: L2_header:
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; CHECK: %[[INDVAR:.*]] = phi i64
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; CHECK: %[[TRUNC:.*]] = trunc i64 %[[INDVAR]] to i32
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L2_header:
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%i = phi i32 [ 0, %L1_header ], [ %i_next, %L2_latch ]
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%i_prom = sext i32 %i to i64
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br label %L3_header
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L3_header:
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br i1 undef, label %L3_latch, label %L2_exiting_1
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L3_latch:
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br i1 undef, label %L3_header, label %L2_exiting_2
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L2_exiting_1:
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br i1 undef, label %L2_latch, label %L1_latch
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L2_exiting_2:
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br i1 undef, label %L2_latch, label %L1_latch
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L2_latch:
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%i_next = add nsw i32 %i, 1
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br label %L2_header
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L1_latch:
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; CHECK: L1_latch:
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; CHECK: %i_lcssa = phi i32 [ %[[TRUNC]], %L2_exiting_1 ], [ %[[TRUNC]], %L2_exiting_2 ]
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%i_lcssa = phi i32 [ %i, %L2_exiting_1 ], [ %i, %L2_exiting_2 ]
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br i1 undef, label %exit, label %L1_header
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exit:
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ret void
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}
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