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6bd02a442c
gcc PowerPC supports 3 representations of long double:
* -mlong-double-64
long double has the same representation of double but is mangled as `e`.
In clang, this is the default on AIX, FreeBSD and Linux musl.
* -mlong-double-128
2 possible 128-bit floating point representations:
+ -mabi=ibmlongdouble
IBM extended double format. Mangled as `g`
In clang, this is the default on Linux glibc.
+ -mabi=ieeelongdouble
IEEE 754 quadruple-precision format. Mangled as `u9__ieee128` (`U10__float128` before gcc 8.2)
This is currently unavailable.
This patch adds -mabi=ibmlongdouble and -mabi=ieeelongdouble, and thus
makes the IEEE 754 quadruple-precision long double available for
languages supported by clang.
Reviewed By: hfinkel
Differential Revision: https://reviews.llvm.org/D64283
llvm-svn: 366044
34 lines
1.4 KiB
C++
34 lines
1.4 KiB
C++
// RUN: %clang_cc1 -triple powerpc64-linux-musl -emit-llvm -o - %s | \
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// RUN: FileCheck --check-prefix=FP64 %s
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// RUN: %clang_cc1 -triple powerpc64-linux-gnu -emit-llvm -o - %s -mlong-double-64 | \
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// RUN: FileCheck --check-prefix=FP64 %s
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// musl defaults to -mlong-double-64, so -mlong-double-128 is needed to make
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// -mabi=ieeelongdouble effective.
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// RUN: %clang_cc1 -triple powerpc64-linux-musl -emit-llvm -o - %s -mlong-double-128 \
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// RUN: -mabi=ieeelongdouble | FileCheck --check-prefix=FP128 %s
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// RUN: %clang_cc1 -triple powerpc64-linux-gnu -emit-llvm -o - %s \
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// RUN: -mabi=ieeelongdouble | FileCheck --check-prefix=FP128 %s
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// IBM extended double is the default.
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// RUN: %clang_cc1 -triple powerpc64-linux-gnu -emit-llvm -o - %s | \
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// RUN: FileCheck --check-prefix=IBM128 %s
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// RUN: %clang_cc1 -triple powerpc64-linux-musl -emit-llvm -o - -mlong-double-128 %s | \
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// RUN: FileCheck --check-prefix=IBM128 %s
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long double x = 0;
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int size = sizeof(x);
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// FP64: @x = global double {{.*}}, align 8
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// FP64: @size = global i32 8
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// FP128: @x = global fp128 {{.*}}, align 16
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// FP128: @size = global i32 16
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// IBM128: @x = global ppc_fp128 {{.*}}, align 16
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// IBM128: @size = global i32 16
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long double foo(long double d) { return d; }
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// FP64: double @_Z3fooe(double %d)
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// FP128: fp128 @_Z3foou9__ieee128(fp128 %d)
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// IBM128: ppc_fp128 @_Z3foog(ppc_fp128 %d)
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