diff test/Transforms/IndVarSimplify/loop_evaluate_6.ll @ 0:95c75e76d11b LLVM3.4

LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children 1172e4bd9c6f
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/Transforms/IndVarSimplify/loop_evaluate_6.ll	Thu Dec 12 13:56:28 2013 +0900
@@ -0,0 +1,26 @@
+; RUN: opt < %s -indvars -loop-deletion -S | grep phi | count 1
+
+define i32 @test(i32 %x_offs) nounwind readnone {
+entry:
+	%0 = icmp sgt i32 %x_offs, 4		; <i1> [#uses=1]
+	br i1 %0, label %bb.nph, label %bb2
+
+bb.nph:		; preds = %entry
+	br label %bb
+
+bb:		; preds = %bb1, %bb.nph
+	%x_offs_addr.01 = phi i32 [ %1, %bb1 ], [ %x_offs, %bb.nph ]		; <i32> [#uses=1]
+	%1 = add i32 %x_offs_addr.01, -4		; <i32> [#uses=3]
+	br label %bb1
+
+bb1:		; preds = %bb
+	%2 = icmp sgt i32 %1, 4		; <i1> [#uses=1]
+	br i1 %2, label %bb, label %bb1.bb2_crit_edge
+
+bb1.bb2_crit_edge:		; preds = %bb1
+	br label %bb2
+
+bb2:		; preds = %bb1.bb2_crit_edge, %entry
+	%x_offs_addr.0.lcssa = phi i32 [ %1, %bb1.bb2_crit_edge ], [ %x_offs, %entry ]		; <i32> [#uses=1]
+	ret i32 %x_offs_addr.0.lcssa
+}