diff options
| -rw-r--r-- | lib/Bitcode/Reader/BitcodeReader.cpp | 6 | ||||
| -rw-r--r-- | test/Bitcode/flags.ll | 27 |
2 files changed, 30 insertions, 3 deletions
diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp index 2549a5162c..6dae45f384 100644 --- a/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/lib/Bitcode/Reader/BitcodeReader.cpp @@ -1702,12 +1702,12 @@ bool BitcodeReader::ParseFunctionBody(Function *F) { if (Opc == Instruction::Add || Opc == Instruction::Sub || Opc == Instruction::Mul) { - if (Record[3] & (1 << bitc::OBO_NO_SIGNED_WRAP)) + if (Record[OpNum] & (1 << bitc::OBO_NO_SIGNED_WRAP)) cast<BinaryOperator>(I)->setHasNoSignedWrap(true); - if (Record[3] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) + if (Record[OpNum] & (1 << bitc::OBO_NO_UNSIGNED_WRAP)) cast<BinaryOperator>(I)->setHasNoUnsignedWrap(true); } else if (Opc == Instruction::SDiv) { - if (Record[3] & (1 << bitc::SDIV_EXACT)) + if (Record[OpNum] & (1 << bitc::SDIV_EXACT)) cast<BinaryOperator>(I)->setIsExact(true); } } diff --git a/test/Bitcode/flags.ll b/test/Bitcode/flags.ll new file mode 100644 index 0000000000..7b0c5b5388 --- /dev/null +++ b/test/Bitcode/flags.ll @@ -0,0 +1,27 @@ +; RUN: llvm-as < %s | llvm-dis > %t0 +; RUN: opt -S < %s > %t1 +; RUN: diff %t0 %t1 +; PR6140 + +; Make sure the flags are serialized/deserialized properly for both +; forward and backward references. + +define void @foo() nounwind { +entry: + br label %first + +second: ; preds = %first + %u = add nuw i32 %a, 0 ; <i32> [#uses=0] + %s = add nsw i32 %a, 0 ; <i32> [#uses=0] + %us = add nuw nsw i32 %a, 0 ; <i32> [#uses=0] + %z = add i32 %a, 0 ; <i32> [#uses=0] + unreachable + +first: ; preds = %entry + %a = bitcast i32 0 to i32 ; <i32> [#uses=8] + %uu = add nuw i32 %a, 0 ; <i32> [#uses=0] + %ss = add nsw i32 %a, 0 ; <i32> [#uses=0] + %uuss = add nuw nsw i32 %a, 0 ; <i32> [#uses=0] + %zz = add i32 %a, 0 ; <i32> [#uses=0] + br label %second +} |