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Disable calls to *_finite and other glibc-only functions on Musl.

Browse Source 
Non-GNU environments don't have __finite_*, so treat them as
unavailable.

Differential Revision: https://reviews.llvm.org/D51282

llvm-svn: 346250
This commit is contained in:
Eli Friedman 2018-11-06 18:23:32 +00:00
parent 8d3d43ab16
commit fa0c365f3a
3 changed files with 49 additions and 6 deletions
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10
lib/Analysis/TargetLibraryInfo.cpp
View File

@ -413,17 +413,17 @@ static void initialize(TargetLibraryInfoImpl &TLI, const Triple &T,
TLI.setUnavailable(LibFunc_flsll);
}
// The following functions are available on Linux,
// but Android uses bionic instead of glibc.
if (!T.isOSLinux() || T.isAndroid()) {
// The following functions are only available on GNU/Linux (using glibc).
// Linux variants without glibc (eg: bionic, musl) may have some subset.
if (!T.isOSLinux() || !T.isGNUEnvironment()) {
TLI.setUnavailable(LibFunc_dunder_strdup);
TLI.setUnavailable(LibFunc_dunder_strtok_r);
TLI.setUnavailable(LibFunc_dunder_isoc99_scanf);
TLI.setUnavailable(LibFunc_dunder_isoc99_sscanf);
TLI.setUnavailable(LibFunc_under_IO_getc);
TLI.setUnavailable(LibFunc_under_IO_putc);
// But, Android has memalign.
if (!T.isAndroid())
// But, Android and musl have memalign.
if (!T.isAndroid() && !T.isMusl())
TLI.setUnavailable(LibFunc_memalign);
TLI.setUnavailable(LibFunc_fopen64);
TLI.setUnavailable(LibFunc_fseeko64);

43
test/Transforms/ConstProp/calls-math-finite.ll
View File

@ -1,5 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -constprop -S | FileCheck %s
; RUN: opt < %s -constprop -S -mtriple=unknown-unknown-linux-musl | FileCheck -check-prefix=MUSL %s
; Test to verify constant folding can occur when math routines are mapped
; to the __<func>_finite versions of functions due to __FINITE_MATH_ONLY__
@ -57,6 +58,48 @@ define void @T() {
; CHECK-NEXT: store float 0x40240926E0000000, float* [[SLOTF]]
; CHECK-NEXT: ret void
;
; MUSL-LABEL: @T(
; MUSL-NEXT: [[SLOT:%.*]] = alloca double
; MUSL-NEXT: [[SLOTF:%.*]] = alloca float
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
; MUSL-NEXT: call
; MUSL-NEXT: store
%slot = alloca double
%slotf = alloca float

2
test/Transforms/InferFunctionAttrs/annotate.ll
View File

@ -1,7 +1,7 @@
; RUN: opt < %s -mtriple=x86_64-- -inferattrs -S | FileCheck %s
; RUN: opt < %s -mtriple=x86_64-- -passes=inferattrs -S | FileCheck %s
; RUN: opt < %s -mtriple=x86_64-apple-macosx10.8.0 -inferattrs -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-DARWIN %s
; RUN: opt < %s -mtriple=x86_64-unknown-linux -inferattrs -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-LINUX %s
; RUN: opt < %s -mtriple=x86_64-unknown-linux-gnu -inferattrs -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-LINUX %s
; RUN: opt < %s -mtriple=nvptx -inferattrs -S | FileCheck -check-prefix=CHECK-NVPTX %s
; operator new routines