[rs6000] Use gen_int_mode in ieee_128bit_negative_zero

Previously we'd generate a non-canonical zero-extended CONST_INT
instead of a sign-extended one, which tripped the assert for
canonical CONST_INTs after a later patch.

2017-12-28  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* config/powerpcspe/powerpcspe.md (ieee_128bit_negative_zero): Use
	gen_int_mode rather than GEN_INT.
	* config/rs6000/rs6000.md (ieee_128bit_negative_zero): Likewise.

From-SVN: r256024

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 680a63a..ad395ef 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
 2017-12-28  Richard Sandiford  <richard.sandiford@linaro.org>
 
+       * config/powerpcspe/powerpcspe.md (ieee_128bit_negative_zero): Use
+       gen_int_mode rather than GEN_INT.
+       * config/rs6000/rs6000.md (ieee_128bit_negative_zero): Likewise.
+
+2017-12-28  Richard Sandiford  <richard.sandiford@linaro.org>
+
        * emit-rtl.c (gen_const_vec_series): Use valid_for_const_vector_p
        instead of CONSTANT_P.
        (gen_vec_series): Likewise.

diff --git a/gcc/config/powerpcspe/powerpcspe.md b/gcc/config/powerpcspe/powerpcspe.md
index 78dd79e..df93f6d 100644 (file)
--- a/gcc/config/powerpcspe/powerpcspe.md
+++ b/gcc/config/powerpcspe/powerpcspe.md
@@ -8113,7 +8113,7 @@
     RTVEC_ELT (v, i) = const0_rtx;
 
   high = (BYTES_BIG_ENDIAN) ? 0 : 15;
-  RTVEC_ELT (v, high) = GEN_INT (0x80);
+  RTVEC_ELT (v, high) = gen_int_mode (0x80, QImode);
 
   rs6000_expand_vector_init (operands[0], gen_rtx_PARALLEL (V16QImode, v));
   DONE;

diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 6e27f1f..2c310d7 100644 (file)
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -8055,7 +8055,7 @@
     RTVEC_ELT (v, i) = const0_rtx;
 
   high = (BYTES_BIG_ENDIAN) ? 0 : 15;
-  RTVEC_ELT (v, high) = GEN_INT (0x80);
+  RTVEC_ELT (v, high) = gen_int_mode (0x80, QImode);
 
   rs6000_expand_vector_init (operands[0], gen_rtx_PARALLEL (V16QImode, v));
   DONE;