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llvm-project/clang/test/CodeGen/libcalls.c

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@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// RUN: %clang_cc1 -fmath-errno -emit-llvm -o - %s -triple i386-unknown-unknown | FileCheck -check-prefix YES %s
// RUN: %clang_cc1 -emit-llvm -o - %s -triple i386-unknown-unknown | FileCheck -check-prefix NO %s
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: define void @test_sqrt
// CHECK-NO: define void @test_sqrt
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
void test_sqrt(float a0, double a1, long double a2) {
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// Following llvm-gcc's lead, we never emit these as intrinsics;
// no-math-errno isn't good enough. We could probably use intrinsics
// with appropriate guards if it proves worthwhile.
// CHECK-YES: call float @sqrtf
// CHECK-NO: call float @sqrtf
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
float l0 = sqrtf(a0);
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: call double @sqrt
// CHECK-NO: call double @sqrt
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
double l1 = sqrt(a1);
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: call x86_fp80 @sqrtl
// CHECK-NO: call x86_fp80 @sqrtl
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
long double l2 = sqrtl(a2);
}
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: declare float @sqrtf(float)
// CHECK-YES: declare double @sqrt(double)
// CHECK-YES: declare x86_fp80 @sqrtl(x86_fp80)
// CHECK-NO: declare float @sqrtf(float) readnone
// CHECK-NO: declare double @sqrt(double) readnone
// CHECK-NO: declare x86_fp80 @sqrtl(x86_fp80) readnone
// CHECK-YES: define void @test_pow
// CHECK-NO: define void @test_pow
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
void test_pow(float a0, double a1, long double a2) {
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: call float @powf
// CHECK-NO: call float @llvm.pow.f32
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
float l0 = powf(a0, a0);
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: call double @pow
// CHECK-NO: call double @llvm.pow.f64
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
double l1 = pow(a1, a1);
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: call x86_fp80 @powl
// CHECK-NO: call x86_fp80 @llvm.pow.f80
Support IRgen of sqrt -> llvm.sqrt, pow -> llvm.pow. - Define pow[lf]?, sqrt[lf]? as builtins. - Add -fmath-errno option which binds to LangOptions.MathErrno - Add new builtin flag Builtin::Context::isConstWithoutErrno for functions which can be marked as const if errno isn't respected for math functions. Sema automatically marks these functions as const when they are defined, if MathErrno=0. - IRgen uses const attribute on sqrt and pow library functions to decide if it can use the llvm intrinsic. llvm-svn: 64689
2009-02-17 06:43:43 +08:00
long double l2 = powl(a2, a2);
}
@llvm.sqrt isn't really close enough to C's sqrt to justify emitting calls to the intrinsic, even when math-errno is off. Fixes rdar://problem/7828230 by falling back on the library function. llvm-svn: 100613
2010-04-07 16:20:20 +08:00
// CHECK-YES: declare float @powf(float, float)
// CHECK-YES: declare double @pow(double, double)
// CHECK-YES: declare x86_fp80 @powl(x86_fp80, x86_fp80)
// CHECK-NO: declare float @llvm.pow.f32(float, float) nounwind readonly
// CHECK-NO: declare double @llvm.pow.f64(double, double) nounwind readonly
// CHECK-NO: declare x86_fp80 @llvm.pow.f80(x86_fp80, x86_fp80) nounwind readonly