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[LLVM][NumericalStabilitySanitizer] Add support for vector ConstantFPs. #151739

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Merged
paulwalker-arm merged 1 commit into from
Aug 4, 2025
Merged

[LLVM][NumericalStabilitySanitizer] Add support for vector ConstantFPs. #151739

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3 changes: 2 additions & 1 deletion llvm/lib/Transforms/Instrumentation/NumericalStabilitySanitizer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -468,7 +468,8 @@ class ValueToShadowMap {
// Floating-point constants.
Type *Ty = Config.getExtendedFPType(CFP->getType());
return ConstantFP::get(
Ty, extendConstantFP(CFP->getValueAPF(), Ty->getFltSemantics()));
Ty, extendConstantFP(CFP->getValueAPF(),
Ty->getScalarType()->getFltSemantics()));
}
// Vector, array, or aggregate constants.
if (C->getType()->isVectorTy()) {
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3 changes: 3 additions & 0 deletions llvm/test/Instrumentation/NumericalStabilitySanitizer/basic.ll
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Expand Up @@ -2,6 +2,9 @@
; RUN: opt -passes=nsan -nsan-shadow-type-mapping=dqq -nsan-truncate-fcmp-eq=false -S %s | FileCheck %s --check-prefixes=CHECK,DQQ
; RUN: opt -passes=nsan -nsan-shadow-type-mapping=dlq -nsan-truncate-fcmp-eq=false -S %s | FileCheck %s --check-prefixes=CHECK,DLQ

; RUN: opt -passes=nsan -nsan-shadow-type-mapping=dqq -nsan-truncate-fcmp-eq=false -use-constant-fp-for-fixed-length-splat -S %s | FileCheck %s --check-prefixes=CHECK,DQQ
; RUN: opt -passes=nsan -nsan-shadow-type-mapping=dlq -nsan-truncate-fcmp-eq=false -use-constant-fp-for-fixed-length-splat -S %s | FileCheck %s --check-prefixes=CHECK,DLQ

target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"

declare float @declaration_only(float %a) sanitize_numerical_stability
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