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[Analysis] Treat ldexpf() as missing on MinGW #84748

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Merged
merged 1 commit into from
Mar 12, 2024
Merged

[Analysis] Treat ldexpf() as missing on MinGW #84748

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5 changes: 5 additions & 0 deletions llvm/lib/Analysis/TargetLibraryInfo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -456,6 +456,11 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
TLI.setUnavailable(LibFunc_uname);
TLI.setUnavailable(LibFunc_unsetenv);
TLI.setUnavailable(LibFunc_utimes);

// MinGW does have ldexpf, but it is a plain wrapper over regular ldexp.
// Therefore it's not beneficial to transform code to use it, i.e.
// just pretend that the function is not available.
TLI.setUnavailable(LibFunc_ldexpf);
}

// Pick just one set of new/delete variants.
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1 change: 1 addition & 0 deletions llvm/test/Transforms/InstCombine/exp2-1.ll
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Expand Up @@ -4,6 +4,7 @@
; RUN: opt < %s -passes=instcombine -S -mtriple=unknown | FileCheck %s -check-prefixes=LDEXP32
; RUN: opt < %s -passes=instcombine -S -mtriple=msp430 | FileCheck %s -check-prefixes=LDEXP16
; RUN: opt < %s -passes=instcombine -S -mtriple=i386-pc-win32 | FileCheck %s -check-prefixes=NOLDEXPF
; RUN: opt < %s -passes=instcombine -S -mtriple=i386-windows-gnu | FileCheck %s -check-prefixes=NOLDEXPF
; RUN: opt < %s -passes=instcombine -S -mtriple=amdgcn-unknown-unknown | FileCheck %s -check-prefixes=NOLDEXP

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-f80:128:128"
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