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| author | Ken Thompson <ken@golang.org> | 2011-02-11 13:22:35 -0800 |
|---|---|---|
| committer | Ken Thompson <ken@golang.org> | 2011-02-11 13:22:35 -0800 |
| commit | ca5179d3f6889185f2aa3fb985f34a963015d133 (patch) | |
| tree | 809113ee64c0c77ceffe7346339159cf03ab5e1b | |
| parent | 9b85d499af923165e643ebb3384e0dd4baff2b38 (diff) | |
| download | go-ca5179d3f6889185f2aa3fb985f34a963015d133.tar.gz go-ca5179d3f6889185f2aa3fb985f34a963015d133.zip | |
5ld: stoped generating 64-bit eor
R=rsc
CC=golang-dev
https://golang.org/cl/4182049
| -rw-r--r-- | src/cmd/5l/asm.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/src/cmd/5l/asm.c b/src/cmd/5l/asm.c index de6b89cfe8..7163997c0f 100644 --- a/src/cmd/5l/asm.c +++ b/src/cmd/5l/asm.c @@ -1470,15 +1470,24 @@ if(debug['G']) print("%ux: %s: arm %d %d %d\n", (uint32)(p->pc), p->from.sym->na o1 |= (p->scond & C_SCOND) << 28; break; case 80: /* fmov zfcon,freg */ - if((p->scond & C_SCOND) != C_SCOND_NONE) - diag("floating point cannot be conditional"); // cant happen - o1 = 0xf3000110; // EOR 64 - - // always clears the double float register + if(p->as == AMOVD) { + o1 = 0xeeb00b00; // VMOV imm 64 + o2 = oprrr(ASUBD, p->scond); + } else { + o1 = 0x0eb00a00; // VMOV imm 32 + o2 = oprrr(ASUBF, p->scond); + } + v = 0x70; // 1.0 r = p->to.reg; - o1 |= r << 0; + + // movf $1.0, r + o1 |= (p->scond & C_SCOND) << 28; o1 |= r << 12; - o1 |= r << 16; + o1 |= (v&0xf) << 0; + o1 |= (v&0xf0) << 12; + + // subf r,r,r + o2 |= r | (r<<16) | (r<<12); break; case 81: /* fmov sfcon,freg */ o1 = 0x0eb00a00; // VMOV imm 32 |