From 9827ad39a7a76802f5ec6f08a833d3ff12f74077 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Sat, 19 Sep 2009 09:51:03 +0000
Subject: Fix PR4926. When target hook EmitInstrWithCustomInserter() insert new
 basic blocks and update CFG, it should also inform sdisel of the changes so
 the phi source operands will come from the right basic blocks.

llvm-svn: 82311
---
 .../X86/2009-09-19-SchedCustomLoweringBug.ll       | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 llvm/test/CodeGen/X86/2009-09-19-SchedCustomLoweringBug.ll

(limited to 'llvm/test')

diff --git a/llvm/test/CodeGen/X86/2009-09-19-SchedCustomLoweringBug.ll b/llvm/test/CodeGen/X86/2009-09-19-SchedCustomLoweringBug.ll
new file mode 100644
index 00000000000..646806e5dbb
--- /dev/null
+++ b/llvm/test/CodeGen/X86/2009-09-19-SchedCustomLoweringBug.ll
@@ -0,0 +1,30 @@
+; RUN: llc < %s -mtriple=i386-apple-darwin10 | FileCheck %s
+
+; PR4958
+
+define i32 @main() nounwind ssp {
+entry:
+; CHECK: main:
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  br label %bb
+
+bb:                                               ; preds = %bb1, %entry
+; CHECK:      movl %e
+; CHECK-NEXT: addl $1
+; CHECK-NEXT: movl %e
+; CHECK-NEXT: adcl $0
+  %i.0 = phi i64 [ 0, %entry ], [ %0, %bb1 ]      ; <i64> [#uses=1]
+  %0 = add nsw i64 %i.0, 1                        ; <i64> [#uses=2]
+  %1 = icmp sgt i32 0, 0                          ; <i1> [#uses=1]
+  br i1 %1, label %bb2, label %bb1
+
+bb1:                                              ; preds = %bb
+  %2 = icmp sle i64 %0, 1                         ; <i1> [#uses=1]
+  br i1 %2, label %bb, label %bb2
+
+bb2:                                              ; preds = %bb1, %bb
+  br label %return
+
+return:                                           ; preds = %bb2
+  ret i32 0
+}
-- 
cgit v1.2.3