TargetLowering: Use the large shift amount during legalize types. The legalizer may call us with an overly large type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162101 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 0 deletions

diff --git a/test/CodeGen/X86/2012-08-17-legalizer-crash.ll b/test/CodeGen/X86/2012-08-17-legalizer-crash.ll
new file mode 100644
index 0000000..a65e688
--- /dev/null
+++ b/test/CodeGen/X86/2012-08-17-legalizer-crash.ll
@@ -0,0 +1,32 @@
+; RUN: llc < %s | FileCheck %s
+; Check that an overly large immediate created by SROA doesn't crash the
+; legalizer.
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.8.0"
+
+%struct._GtkSheetRow = type { i32*, i32, i32, i32, %struct._GtkSheetButton, i32, i32 }
+%struct._GtkSheetButton = type { i32, i32*, i32, i32*, i32 }
+
+@a = common global %struct._GtkSheetRow* null, align 8
+
+define void @fn1() nounwind uwtable ssp {
+entry:
+  %0 = load %struct._GtkSheetRow** @a, align 8
+  %1 = bitcast %struct._GtkSheetRow* %0 to i576*
+  %srcval2 = load i576* %1, align 8
+  %tobool = icmp ugt i576 %srcval2, 57586096570152913699974892898380567793532123114264532903689671329431521032595044740083720782129802971518987656109067457577065805510327036019308994315074097345724415
+  br i1 %tobool, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  store i576 %srcval2, i576* %1, align 8
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret void
+
+; CHECK: fn1:
+; CHECK: shrq $32, [[REG:%.*]]
+; CHECK: testq [[REG]], [[REG]]
+; CHECK: je
+}