llvmbot
commented
1 week ago @llvm/issue-subscribers-backend-powerpc
Author: None (llvmbot)
| | |
| --- | --- |
| Bugzilla Link | [33684](https://llvm.org/bz33684) |
| Version | trunk |
| OS | Linux |
| Attachments | [The functions that fail.](https://user-images.githubusercontent.com/60944935/143755925-297c1512-8270-4f09-875f-a9b254b7826f.gz) |
| Reporter | LLVM Bugzilla Contributor |
| CC | @hfinkel |
## Extended Description
/*The following four functions from the current musl sources fail to compile
for various reasons with the command line
clang -target ppc64le-linux ppc.c
The first two get
ppc.c:38:38: error: invalid output constraint '=ww' in asm
__asm__ ("xsmaxdp %x0, %x1, %x2" : "=ww"(x) : "ww"(x), "ww"(y));
^
ppc.c:44:38: error: invalid output constraint '=ww' in asm
__asm__ ("xsmindp %x0, %x1, %x2" : "=ww"(x) : "ww"(x), "ww"(y));
^
and the second two two get
ppc.c:52:12: error: invalid operand in inline asm: 'xsmaxdp ${0:x}, ${1:x}, ${2:x}'
__asm__ ("xsmaxdp %x0, %x1, %x2" : "=ws"(x) : "ws"(x), "ws"(y));
^
ppc.c:52:12: error: invalid operand in inline asm: 'xsmaxdp ${0:x}, ${1:x}, ${2:x}'
ppc.c:52:12: error: invalid operand in inline asm: 'xsmaxdp ${0:x}, ${1:x}, ${2:x}'
ppc.c:52:12: error: unknown operand
<inline asm>:1:10: note: instantiated into assembly here
xsmaxdp , ,
^
ppc.c:58:12: error: invalid operand in inline asm: 'xsmindp ${0:x}, ${1:x}, ${2:x}'
__asm__ ("xsmindp %x0, %x1, %x2" : "=ws"(x) : "ws"(x), "ws"(y));
^
ppc.c:58:12: error: invalid operand in inline asm: 'xsmindp ${0:x}, ${1:x}, ${2:x}'
ppc.c:58:12: error: invalid operand in inline asm: 'xsmindp ${0:x}, ${1:x}, ${2:x}'
ppc.c:58:12: error: unknown operand
<inline asm>:1:10: note: instantiated into assembly here
xsmindp , ,
^
*/
#if 1
float fmaxf(float x, float y)
{
__asm__ ("xsmaxdp %x0, %x1, %x2" : "=ww"(x) : "ww"(x), "ww"(y));
return x;
}
float fminf(float x, float y)
{
__asm__ ("xsmindp %x0, %x1, %x2" : "=ww"(x) : "ww"(x), "ww"(y));
return x;
}
#else
double fmax(double x, double y)
{
__asm__ ("xsmaxdp %x0, %x1, %x2" : "=ws"(x) : "ws"(x), "ws"(y));
return x;
}
double fmin(double x, double y)
{
__asm__ ("xsmindp %x0, %x1, %x2" : "=ws"(x) : "ws"(x), "ws"(y));
return x;
}
#endif
Extended Description
/*The following four functions from the current musl sources fail to compile for various reasons with the command line clang -target ppc64le-linux ppc.c The first two get
ppc.c:38:38: error: invalid output constraint '=ww' in asm asm ("xsmaxdp %x0, %x1, %x2" : "=ww"(x) : "ww"(x), "ww"(y)); ^ ppc.c:44:38: error: invalid output constraint '=ww' in asm asm ("xsmindp %x0, %x1, %x2" : "=ww"(x) : "ww"(x), "ww"(y)); ^
and the second two two get
ppc.c:52:12: error: invalid operand in inline asm: 'xsmaxdp ${0:x}, ${1:x}, ${2:x}' asm ("xsmaxdp %x0, %x1, %x2" : "=ws"(x) : "ws"(x), "ws"(y)); ^ ppc.c:52:12: error: invalid operand in inline asm: 'xsmaxdp ${0:x}, ${1:x}, ${2:x}' ppc.c:52:12: error: invalid operand in inline asm: 'xsmaxdp ${0:x}, ${1:x}, ${2:x}' ppc.c:52:12: error: unknown operand