EXTRACT_SUBREG test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42900 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 35 insertions, 0 deletions

diff --git a/test/CodeGen/X86/2007-10-12-CoalesceExtSubReg.ll b/test/CodeGen/X86/2007-10-12-CoalesceExtSubReg.ll
new file mode 100644
index 0000000..99b863e
--- /dev/null
+++ b/test/CodeGen/X86/2007-10-12-CoalesceExtSubReg.ll
@@ -0,0 +1,35 @@
+; RUN: llvm-as < %s | llc -march=x86 | not movb
+
+define i16 @f(i32* %bp, i32* %ss) signext  {
+entry:
+	br label %cond_next127
+
+cond_next127:		; preds = %cond_next391, %entry
+	%v.1 = phi i32 [ undef, %entry ], [ %tmp411, %cond_next391 ]		; <i32> [#uses=1]
+	%tmp149 = mul i32 0, %v.1		; <i32> [#uses=0]
+	%tmp254 = and i32 0, 15		; <i32> [#uses=1]
+	%tmp256 = and i32 0, 15		; <i32> [#uses=2]
+	br i1 false, label %cond_true267, label %cond_next391
+
+cond_true267:		; preds = %cond_next127
+	ret i16 0
+
+cond_next391:		; preds = %cond_next127
+	%tmp393 = load i32* %ss, align 4		; <i32> [#uses=1]
+	%tmp395 = load i32* %bp, align 4		; <i32> [#uses=2]
+	%tmp396 = shl i32 %tmp393, %tmp395		; <i32> [#uses=2]
+	%tmp398 = sub i32 32, %tmp256		; <i32> [#uses=2]
+	%tmp399 = lshr i32 %tmp396, %tmp398		; <i32> [#uses=1]
+	%tmp405 = lshr i32 %tmp396, 31		; <i32> [#uses=1]
+	%tmp406 = add i32 %tmp405, -1		; <i32> [#uses=1]
+	%tmp409 = lshr i32 %tmp406, %tmp398		; <i32> [#uses=1]
+	%tmp411 = sub i32 %tmp399, %tmp409		; <i32> [#uses=1]
+	%tmp422445 = add i32 %tmp254, 0		; <i32> [#uses=1]
+	%tmp426447 = add i32 %tmp395, %tmp256		; <i32> [#uses=1]
+	store i32 %tmp426447, i32* %bp, align 4
+	%tmp429448 = icmp ult i32 %tmp422445, 63		; <i1> [#uses=1]
+	br i1 %tmp429448, label %cond_next127, label %UnifiedReturnBlock
+
+UnifiedReturnBlock:		; preds = %cond_next391
+	ret i16 0
+}