Fix PR1187.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43692 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 37 insertions, 0 deletions

diff --git a/test/CodeGen/X86/2007-11-04-LiveIntervalCrash.ll b/test/CodeGen/X86/2007-11-04-LiveIntervalCrash.ll
new file mode 100644
index 0000000..56993a5
--- /dev/null
+++ b/test/CodeGen/X86/2007-11-04-LiveIntervalCrash.ll
@@ -0,0 +1,37 @@
+; RUN: llvm-as < %s | llc -mtriple=x86_64-unknown-linux-gnu
+; PR1187
+
+        %struct.dentry = type { %struct.dentry_operations* }
+        %struct.dentry_operations = type { i32 (%struct.dentry*, %struct.qstr*)* }
+        %struct.qstr = type { i32, i32, i8* }
+
+define %struct.dentry* @d_hash_and_lookup(%struct.dentry* %dir, %struct.qstr* %name) {
+entry:
+        br i1 false, label %bb37, label %bb
+
+bb:             ; preds = %bb, %entry
+        %name8.0.reg2mem.0.rec = phi i64 [ %indvar.next, %bb ], [ 0, %entry ]           ; <i64> [#uses=1]
+        %hash.0.reg2mem.0 = phi i64 [ %tmp27, %bb ], [ 0, %entry ]              ; <i64> [#uses=1]
+        %tmp13 = load i8* null, align 1         ; <i8> [#uses=1]
+        %tmp1314 = zext i8 %tmp13 to i64                ; <i64> [#uses=1]
+        %tmp25 = lshr i64 %tmp1314, 4           ; <i64> [#uses=1]
+        %tmp22 = add i64 %tmp25, %hash.0.reg2mem.0              ; <i64> [#uses=1]
+        %tmp26 = add i64 %tmp22, 0              ; <i64> [#uses=1]
+        %tmp27 = mul i64 %tmp26, 11             ; <i64> [#uses=2]
+        %indvar.next = add i64 %name8.0.reg2mem.0.rec, 1                ; <i64> [#uses=2]
+        %exitcond = icmp eq i64 %indvar.next, 0         ; <i1> [#uses=1]
+        br i1 %exitcond, label %bb37.loopexit, label %bb
+
+bb37.loopexit:          ; preds = %bb
+        %phitmp = trunc i64 %tmp27 to i32               ; <i32> [#uses=1]
+        br label %bb37
+
+bb37:           ; preds = %bb37.loopexit, %entry
+        %hash.0.reg2mem.1 = phi i32 [ %phitmp, %bb37.loopexit ], [ 0, %entry ]          ; <i32> [#uses=1]
+        store i32 %hash.0.reg2mem.1, i32* null, align 8
+        %tmp75 = tail call i32 null( %struct.dentry* %dir, %struct.qstr* %name )                ; <i32> [#uses=0]
+        %tmp84 = tail call i32 (...)* @d_lookup( %struct.dentry* %dir, %struct.qstr* %name )            ; <i32> [#uses=0]
+        ret %struct.dentry* null
+}
+
+declare i32 @d_lookup(...)