[llvm-commits] CVS: llvm/test/Transforms/InstCombine/2007-04-04-BadFoldBitcastIntoMalloc.ll

[Jeff Cohen]

Changes in directory llvm/test/Transforms/InstCombine:

2007-04-04-BadFoldBitcastIntoMalloc.ll added (r1.1)
---
Log message:

Add new test.

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Diffs of the changes:  (+19 -0)

 2007-04-04-BadFoldBitcastIntoMalloc.ll |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+)


Index: llvm/test/Transforms/InstCombine/2007-04-04-BadFoldBitcastIntoMalloc.ll
diff -c /dev/null llvm/test/Transforms/InstCombine/2007-04-04-BadFoldBitcastIntoMalloc.ll:1.1
*** /dev/null	Wed Apr  4 11:11:33 2007
--- llvm/test/Transforms/InstCombine/2007-04-04-BadFoldBitcastIntoMalloc.ll	Wed Apr  4 11:11:23 2007
***************
*** 0 ****
--- 1,19 ----
+ ; In the presence of a negative offset (the -8 below), a fold of a bitcast into
+ ; a malloc messes up the element count, causing an extra 4GB to be allocated on
+ ; 64-bit targets.
+ ;
+ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep -v '= add i32'
+ 
+ target datalayout = "e-p:64:64:64-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"
+ target triple = "x86_64-unknown-freebsd6.2"
+ 
+ define i1 @test(i32 %tmp141, double** %tmp145)
+ {
+   %tmp133 = add i32 %tmp141, 1
+   %tmp134 = shl i32 %tmp133, 3
+   %tmp135 = add i32 %tmp134, -8
+   %tmp136 = malloc i8, i32 %tmp135
+   %tmp137 = bitcast i8* %tmp136 to double*
+   store double* %tmp137, double** %tmp145
+   ret i1 false
+ }