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llvm-mirror/test/Transforms/LoopSimplify/single-backedge.ll
Dan Gohman 205b641954 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00

21 lines
574 B
LLVM

; The loop canonicalization pass should guarantee that there is one backedge
; for all loops. This allows the -indvars pass to recognize the %IV
; induction variable in this testcase.
; RUN: opt < %s -indvars -S | grep indvar
define i32 @test(i1 %C) {
; <label>:0
br label %Loop
Loop: ; preds = %BE2, %BE1, %0
%IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=2]
store i32 %IV, i32* null
%IV2 = add i32 %IV, 2 ; <i32> [#uses=2]
br i1 %C, label %BE1, label %BE2
BE1: ; preds = %Loop
br label %Loop
BE2: ; preds = %Loop
br label %Loop
}