Don't track max alignment during stack object allocations since they can be deleted later. Let PEI compute it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47668 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 33 insertions, 0 deletions

diff --git a/test/CodeGen/X86/2008-02-27-PEICrash.ll b/test/CodeGen/X86/2008-02-27-PEICrash.ll
new file mode 100644
index 0000000..b644d8f
--- /dev/null
+++ b/test/CodeGen/X86/2008-02-27-PEICrash.ll
@@ -0,0 +1,33 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2
+
+define i64 @__divsc3(float %a, float %b, float %c, float %d) nounwind readnone  {
+entry:
+	br i1 false, label %bb56, label %bb33
+
+bb33:		; preds = %entry
+	br label %bb56
+
+bb56:		; preds = %bb33, %entry
+	%tmp36.pn = phi float [ 0.000000e+00, %bb33 ], [ 0.000000e+00, %entry ]		; <float> [#uses=1]
+	%b.pn509 = phi float [ %b, %bb33 ], [ %a, %entry ]		; <float> [#uses=1]
+	%a.pn = phi float [ %a, %bb33 ], [ %b, %entry ]		; <float> [#uses=1]
+	%tmp41.pn508 = phi float [ 0.000000e+00, %bb33 ], [ 0.000000e+00, %entry ]		; <float> [#uses=1]
+	%tmp51.pn = phi float [ 0.000000e+00, %bb33 ], [ %a, %entry ]		; <float> [#uses=1]
+	%tmp44.pn = mul float %tmp36.pn, %b.pn509		; <float> [#uses=1]
+	%tmp46.pn = add float %tmp44.pn, %a.pn		; <float> [#uses=1]
+	%tmp53.pn = sub float 0.000000e+00, %tmp51.pn		; <float> [#uses=1]
+	%x.0 = fdiv float %tmp46.pn, %tmp41.pn508		; <float> [#uses=1]
+	%y.0 = fdiv float %tmp53.pn, 0.000000e+00		; <float> [#uses=1]
+	br i1 false, label %bb433, label %bb98
+
+bb98:		; preds = %bb56
+	%tmp102 = mul float 0.000000e+00, %a		; <float> [#uses=1]
+	%tmp106 = mul float 0.000000e+00, %b		; <float> [#uses=1]
+	br label %bb433
+
+bb433:		; preds = %bb98, %bb56
+	%x.1 = phi float [ %tmp102, %bb98 ], [ %x.0, %bb56 ]		; <float> [#uses=0]
+	%y.1 = phi float [ %tmp106, %bb98 ], [ %y.0, %bb56 ]		; <float> [#uses=1]
+	%tmp460 = add float %y.1, 0.000000e+00		; <float> [#uses=0]
+	ret i64 0
+}