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Implement support for large immediates on RISC-V.

This commit is contained in:
Andrius Štikonas 2021-10-03 11:31:34 +01:00
parent 5e74995c13
commit 56ee526c4c
3 changed files with 36 additions and 17 deletions
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21
cc_core.c
View File

@ -654,7 +654,8 @@ void primary_expr_number()
emit_out(global_token->s);
emit_out(" ADDI");
}
else {
else if (0 == (size >> 30))
{
emit_out("RD_A0 ~");
emit_out(global_token->s);
emit_out(" LUI\n");
@ -662,6 +663,24 @@ void primary_expr_number()
emit_out(global_token->s);
emit_out(" ADDI");
}
else {
int high = size >> 30;
int low = ((size >> 30) << 30) ^ size;
emit_out("RD_A0 ~");
emit_out(int2str(high, 10, TRUE));
emit_out(" LUI\n");
emit_out("RD_A0 RS1_A0 !");
emit_out(int2str(high, 10, TRUE));
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A0 RS2_X30 SLLI\n");
emit_out("RD_T1 ~");
emit_out(int2str(low, 10, TRUE));
emit_out(" LUI\n");
emit_out("RD_T1 RS1_T1 !");
emit_out(int2str(low, 10, TRUE));
emit_out(" ADDI\n");
emit_out("RD_A0 RS1_A0 RS2_T1 OR\n");
}
}
emit_out("\n");
global_token = global_token->next;

30
test/test.answers
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@ -59,7 +59,7 @@ c5ee99709aae9902b9f3e1c964c6f032aa1fcb6ffde22a0f70a39817f1d3e6d1 test/results/t
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@ -73,7 +73,7 @@ cbbc0a92b5345ba1ec9551ffa5b8ddd406b63578ccfa36bbba6dce5897a5cabb test/results/t
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@ -132,14 +132,14 @@ b3634bb37ce7285795076df9326f8aa645755e2ab9019083da6de988387aeaf4 test/results/t
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@ -151,7 +151,7 @@ cb7c0d09d2468dfbad4e275ea2f0820dabbfa1ef49596f302074dc420dc2e2b6 test/results/t
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@ -181,13 +181,13 @@ a281f1c4262bca7dd34e236ba693afe9509a5c5bde8a7e61d4fb2bf4fb80fb4f test/results/t
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@ -198,12 +198,12 @@ f63ebb32f3b44e60ff60b50cf9721e09583b71fb608402f0531ebe6381853638 test/results/t
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2
test/test1000/proof.answer
View File

@ -1 +1 @@
5b105981c7e983384991e2449b30099fa1486c0d68b8408d709edd19936dd863 test/test1000/proof
e2717a208a5649251ab28cf9e46541147074953f179a6dc92c2fe8464220891e test/test1000/proof