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authorChris Lattner <sabre@nondot.org>2004-11-07 00:24:14 +0000
committerChris Lattner <sabre@nondot.org>2004-11-07 00:24:14 +0000
commit5993ea5da227480360b9d28e7db0cc0164c0f7c5 (patch)
treee15e5fe77defa6028069f787a8bf7541d72ec585 /llvm/test/Regression/CodeGen/Generic/badFoldGEP.ll
parent0624d4fd2f52e837c381e1617426930e2679dc67 (diff)
downloadbcm5719-llvm-5993ea5da227480360b9d28e7db0cc0164c0f7c5.tar.gz
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These files are all moved to test/Regression/CodeGen/Generic
llvm-svn: 17538
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diff --git a/llvm/test/Regression/CodeGen/Generic/badFoldGEP.ll b/llvm/test/Regression/CodeGen/Generic/badFoldGEP.ll
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+; RUN: llvm-as -f %s -o - | llc
+
+;; GetMemInstArgs() folded the two getElementPtr instructions together,
+;; producing an illegal getElementPtr. That's because the type generated
+;; by the last index for the first one is a structure field, not an array
+;; element, and the second one indexes off that structure field.
+;; The code is legal but not type-safe and the two GEPs should not be folded.
+;;
+;; This code fragment is from Spec/CINT2000/197.parser/197.parser.bc,
+;; file post_process.c, function build_domain().
+;; (Modified to replace store with load and return load value.)
+;;
+
+%Domain = type { sbyte*, int, int*, int, int, int*, %Domain* }
+%domain_array = uninitialized global [497 x %Domain]
+
+implementation; Functions:
+
+declare void %opaque([497 x %Domain]*)
+
+int %main(int %argc, sbyte** %argv) {
+bb0: ;[#uses=0]
+ call void %opaque([497 x %Domain]* %domain_array)
+ %cann-indvar-idxcast = cast int %argc to long
+ %reg841 = getelementptr [497 x %Domain]* %domain_array, long 0, long %cann-indvar-idxcast, ubyte 3
+ %reg846 = getelementptr int* %reg841, long 1
+ %reg820 = load int* %reg846
+ ret int %reg820
+}
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