Index: src/mips64/macro-assembler-mips64.cc |
diff --git a/src/mips64/macro-assembler-mips64.cc b/src/mips64/macro-assembler-mips64.cc |
index 483fc5622d5bc6875a37e76b3ecf695d644b55b1..dd7aba52693e05d3f4a35d6e461d78be5e728ea5 100644 |
--- a/src/mips64/macro-assembler-mips64.cc |
+++ b/src/mips64/macro-assembler-mips64.cc |
@@ -1728,6 +1728,12 @@ void MacroAssembler::Trunc_uw_d(FPURegister fd, |
mtc1(t8, fd); |
} |
+void MacroAssembler::Trunc_uw_s(FPURegister fd, FPURegister fs, |
+ FPURegister scratch) { |
+ Trunc_uw_s(fs, t8, scratch); |
+ mtc1(t8, fd); |
+} |
+ |
void MacroAssembler::Trunc_ul_d(FPURegister fd, FPURegister fs, |
FPURegister scratch, Register result) { |
Trunc_ul_d(fs, t8, scratch, result); |
@@ -1794,6 +1800,35 @@ void MacroAssembler::Trunc_uw_d(FPURegister fd, |
bind(&done); |
} |
+void MacroAssembler::Trunc_uw_s(FPURegister fd, Register rs, |
+ FPURegister scratch) { |
+ DCHECK(!fd.is(scratch)); |
+ DCHECK(!rs.is(at)); |
+ |
+ // Load 2^31 into scratch as its float representation. |
+ li(at, 0x4F000000); |
+ mtc1(at, scratch); |
+ // Test if scratch > fd. |
+ // If fd < 2^31 we can convert it normally. |
+ Label simple_convert; |
+ BranchF32(&simple_convert, NULL, lt, fd, scratch); |
+ |
+ // First we subtract 2^31 from fd, then trunc it to rs |
+ // and add 2^31 to rs. |
+ sub_s(scratch, fd, scratch); |
+ trunc_w_s(scratch, scratch); |
+ mfc1(rs, scratch); |
+ Or(rs, rs, 1 << 31); |
+ |
+ Label done; |
+ Branch(&done); |
+ // Simple conversion. |
+ bind(&simple_convert); |
+ trunc_w_s(scratch, fd); |
+ mfc1(rs, scratch); |
+ |
+ bind(&done); |
+} |
void MacroAssembler::Trunc_ul_d(FPURegister fd, Register rs, |
FPURegister scratch, Register result) { |