6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-15 21:24:00 +00:00
Code Issues Projects Releases Wiki Activity

Correct extractelement constant folding

Browse Source 
Summary: Constant folding of extractelement with out-of-bound index produces undef also for indexes bigger than 64bit (instead of crash assert failure as before)

Test Plan: Unit tests included.

Reviewers: majnemer

Reviewed By: majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9225

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235700 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pawel Bylica
2015-04-24 07:42:35 +00:00
parent 9ee9f1a334
commit 8d00f2ad79
2 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
unittests/IR/ConstantsTest.cpp
View File

@ -187,6 +187,10 @@ TEST(ConstantsTest, AsInstructionsTest) {
Constant *P6 = ConstantExpr::getBitCast(P4, VectorType::get(Int16Ty, 2));
Constant *One = ConstantInt::get(Int32Ty, 1);
Constant *Two = ConstantInt::get(Int64Ty, 2);
Constant *Big = ConstantInt::get(getGlobalContext(),
APInt{256, uint64_t(-1), true});
Constant *Undef = UndefValue::get(Int64Ty);
#define P0STR "ptrtoint (i32** @dummy to i32)"
#define P1STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to float)"
@ -255,6 +259,10 @@ TEST(ConstantsTest, AsInstructionsTest) {
CHECK(ConstantExpr::getExtractElement(P6, One), "extractelement <2 x i16> "
P6STR ", i32 1");
EXPECT_TRUE(isa<UndefValue>(ConstantExpr::getExtractElement(P6, Two)));
EXPECT_TRUE(isa<UndefValue>(ConstantExpr::getExtractElement(P6, Big)));
EXPECT_TRUE(isa<UndefValue>(ConstantExpr::getExtractElement(P6, Undef)));
}
#ifdef GTEST_HAS_DEATH_TEST