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Tighten up a check for folding away loads from (newly constant) globals. This

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fixes a crash on Transforms/GlobalOpt/2007-11-09-GEP-GEP-Crash.ll and 
rdar://5585488.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43949 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2007-11-09 17:33:02 +00:00
parent 27b12384e6
commit 7b52fe7272
2 changed files with 30 additions and 6 deletions
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19
test/Transforms/GlobalOpt/2007-11-09-GEP-GEP-Crash.ll Normal file
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@@ -0,0 +1,19 @@
; RUN: llvm-as < %s | opt -globalopt -disable-output
target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f128:64:128"
target triple = "powerpc-apple-darwin8"
%struct.empty0 = type { }
%struct.es = type { %struct.empty0 }
%struct.es1 = type { %struct.empty0 }
@aaui1 = internal global [6 x [2 x i32]] [ [2 x i32] [ i32 1, i32 1 ], [2 x i32] [ i32 1, i32 1 ], [2 x i32] [ i32 1, i32 1 ], [2 x i32] [ i32 1, i32 1 ], [2 x i32] [ i32 1, i32 1 ], [2 x i32] [ i32 1, i32 1 ] ] ; <[6 x [2 x i32]]*> [#uses=1]
@aaui0 = internal global [0 x [2 x i32]] zeroinitializer ; <[0 x [2 x i32]]*> [#uses=1]
define i8 @func() {
entry:
%tmp10 = getelementptr [2 x i32]* getelementptr ([6 x [2 x i32]]* @aaui1, i32 0, i32 0), i32 5, i32 1 ; <i32*> [#uses=1]
%tmp11 = load i32* %tmp10, align 4 ; <i32> [#uses=1]
%tmp12 = call i32 (...)* @func3( i32* null, i32 0, i32 %tmp11 ) ; <i32> [#uses=0]
ret i8 undef
}
declare i32 @func3(...)