New test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43193 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll b/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll
new file mode 100644 (file)
index 0000000..e649999
--- /dev/null
+++ b/test/CodeGen/X86/2007-10-19-SpillerUnfold.ll
@@ -0,0 +1,84 @@
+; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | grep inc | not grep PTR
+
+define i16 @t(i32* %bitptr, i32* %source, i8** %byteptr, i32 %scale, i32 %round) signext  {
+entry:
+       br label %bb
+
+bb:            ; preds = %cond_next391, %entry
+       %cnt.0 = phi i32 [ 0, %entry ], [ %tmp422445, %cond_next391 ]           ; <i32> [#uses=1]
+       %v.1 = phi i32 [ undef, %entry ], [ %tmp411, %cond_next391 ]            ; <i32> [#uses=0]
+       br i1 false, label %cond_true, label %cond_next127
+
+cond_true:             ; preds = %bb
+       store i8* null, i8** %byteptr, align 4
+       store i8* null, i8** %byteptr, align 4
+       br label %cond_next127
+
+cond_next127:          ; preds = %cond_true, %bb
+       %tmp151 = add i32 0, %round             ; <i32> [#uses=1]
+       %tmp153 = ashr i32 %tmp151, %scale              ; <i32> [#uses=2]
+       %tmp154155 = trunc i32 %tmp153 to i16           ; <i16> [#uses=1]
+       %tmp154155156 = sext i16 %tmp154155 to i32              ; <i32> [#uses=1]
+       %tmp158 = xor i32 %tmp154155156, %tmp153                ; <i32> [#uses=1]
+       %tmp160 = or i32 %tmp158, %cnt.0                ; <i32> [#uses=1]
+       %tmp171 = load i32* %bitptr, align 4            ; <i32> [#uses=1]
+       %tmp180181 = sext i16 0 to i32          ; <i32> [#uses=3]
+       %tmp183 = add i32 %tmp160, 1            ; <i32> [#uses=1]
+       br i1 false, label %cond_true188, label %cond_next245
+
+cond_true188:          ; preds = %cond_next127
+       ret i16 0
+
+cond_next245:          ; preds = %cond_next127
+       %tmp249 = ashr i32 %tmp180181, 8                ; <i32> [#uses=1]
+       %tmp250 = add i32 %tmp171, %tmp249              ; <i32> [#uses=1]
+       %tmp253444 = lshr i32 %tmp180181, 4             ; <i32> [#uses=1]
+       %tmp254 = and i32 %tmp253444, 15                ; <i32> [#uses=1]
+       %tmp256 = and i32 %tmp180181, 15                ; <i32> [#uses=2]
+       %tmp264 = icmp ugt i32 %tmp250, 15              ; <i1> [#uses=1]
+       br i1 %tmp264, label %cond_true267, label %cond_next391
+
+cond_true267:          ; preds = %cond_next245
+       store i8* null, i8** %byteptr, align 4
+       store i8* null, i8** %byteptr, align 4
+       br i1 false, label %cond_true289, label %cond_next327
+
+cond_true289:          ; preds = %cond_true267
+       ret i16 0
+
+cond_next327:          ; preds = %cond_true267
+       br i1 false, label %cond_true343, label %cond_next385
+
+cond_true343:          ; preds = %cond_next327
+       %tmp345 = load i8** %byteptr, align 4           ; <i8*> [#uses=1]
+       store i8* null, i8** %byteptr, align 4
+       br i1 false, label %cond_next385, label %cond_true352
+
+cond_true352:          ; preds = %cond_true343
+       store i8* %tmp345, i8** %byteptr, align 4
+       br i1 false, label %cond_true364, label %cond_next385
+
+cond_true364:          ; preds = %cond_true352
+       ret i16 0
+
+cond_next385:          ; preds = %cond_true352, %cond_true343, %cond_next327
+       br label %cond_next391
+
+cond_next391:          ; preds = %cond_next385, %cond_next245
+       %tmp393 = load i32* %source, align 4            ; <i32> [#uses=1]
+       %tmp395 = load i32* %bitptr, align 4            ; <i32> [#uses=2]
+       %tmp396 = shl i32 %tmp393, %tmp395              ; <i32> [#uses=1]
+       %tmp398 = sub i32 32, %tmp256           ; <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 0, %tmp409            ; <i32> [#uses=1]
+       %tmp422445 = add i32 %tmp254, %tmp183           ; <i32> [#uses=2]
+       %tmp426447 = add i32 %tmp395, %tmp256           ; <i32> [#uses=1]
+       store i32 %tmp426447, i32* %bitptr, align 4
+       %tmp429448 = icmp ult i32 %tmp422445, 63                ; <i1> [#uses=1]
+       br i1 %tmp429448, label %bb, label %UnifiedReturnBlock
+
+UnifiedReturnBlock:            ; preds = %cond_next391
+       ret i16 0
+}