diff options
Diffstat (limited to 'src/cmd')
| -rw-r--r-- | src/cmd/asm/internal/asm/testdata/ppc64.s | 5 | ||||
| -rw-r--r-- | src/cmd/internal/obj/ppc64/obj9.go | 7 |
2 files changed, 10 insertions, 2 deletions
diff --git a/src/cmd/asm/internal/asm/testdata/ppc64.s b/src/cmd/asm/internal/asm/testdata/ppc64.s index 5cff82ff36..367d7b77db 100644 --- a/src/cmd/asm/internal/asm/testdata/ppc64.s +++ b/src/cmd/asm/internal/asm/testdata/ppc64.s @@ -28,6 +28,11 @@ TEXT asmtest(SB),DUPOK|NOSPLIT,$0 MOVW $-32767, R5 // 38a08001 MOVW $-32768, R6 // 38c08000 MOVW $1234567, R5 // 6405001260a5d687 + // Hex constant 0x80000001 + MOVW $2147483649, R5 // 6405800060a50001 + MOVD $2147483649, R5 // 6405800060a50001 + // Hex constant 0xFFFFFFFF80000001 + MOVD $-2147483647, R5 // 3ca0800060a50001 MOVD 8(R3), R4 // e8830008 MOVD (R3)(R4), R5 // 7ca4182a MOVD (R3)(R0), R5 // 7ca0182a diff --git a/src/cmd/internal/obj/ppc64/obj9.go b/src/cmd/internal/obj/ppc64/obj9.go index 84ba28211d..47ad85e79c 100644 --- a/src/cmd/internal/obj/ppc64/obj9.go +++ b/src/cmd/internal/obj/ppc64/obj9.go @@ -78,9 +78,12 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) { } } - // Put >32-bit constants in memory and load them case AMOVD: - if p.From.Type == obj.TYPE_CONST && p.From.Name == obj.NAME_NONE && p.From.Reg == 0 && int64(int32(p.From.Offset)) != p.From.Offset { + // 32b constants (signed and unsigned) can be generated via 1 or 2 instructions. + // All others must be placed in memory and loaded. + isS32 := int64(int32(p.From.Offset)) == p.From.Offset + isU32 := uint64(uint32(p.From.Offset)) == uint64(p.From.Offset) + if p.From.Type == obj.TYPE_CONST && p.From.Name == obj.NAME_NONE && p.From.Reg == 0 && !isS32 && !isU32 { p.From.Type = obj.TYPE_MEM p.From.Sym = ctxt.Int64Sym(p.From.Offset) p.From.Name = obj.NAME_EXTERN |