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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2015-12-14 17:13:33 +0100 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2015-12-14 17:13:33 +0100 |
| commit | 755cd5a907454199a9bff3d6f9f4baa4b298289d (patch) | |
| tree | 862dce9eccdf0578a95c89ab3e4f0eeaf5a5ecaf /gcc | |
| parent | 150cf34781103ff73f2c930777cb514882f73ef2 (diff) | |
| download | gcc-755cd5a907454199a9bff3d6f9f4baa4b298289d.zip gcc-755cd5a907454199a9bff3d6f9f4baa4b298289d.tar.gz gcc-755cd5a907454199a9bff3d6f9f4baa4b298289d.tar.bz2 | |
rs6000: Fix a mistake in cstore_si_as_di (PR68865, PR68879)
convert_move does not know how to zero-extend a constant integer to the
target mode -- simply because it does not know the source mode. As a
result, 32-bit SImode with the high bit set would be effectively sign-
extended instead of zero-extended.
This patch fixes it.
PR target/68865
PR target/68879
* config/rs6000/rs6000.md (cstore_si_as_di): Force all operands
into registers.
From-SVN: r231621
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.md | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ed6f28e..14efd7a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-12-14 Segher Boessenkool <segher@kernel.crashing.org> + + PR target/68865 + PR target/68879 + * config/rs6000/rs6000.md (cstore_si_as_di): Force all operands + into registers. + 2015-12-14 Richard Biener <rguenther@suse.de> Revert accidentially applied diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md index 66a62ef..35685a9 100644 --- a/gcc/config/rs6000/rs6000.md +++ b/gcc/config/rs6000/rs6000.md @@ -10631,6 +10631,8 @@ int uns_flag = unsigned_comparison_operator (operands[1], VOIDmode) ? 1 : 0; enum rtx_code cond_code = signed_condition (GET_CODE (operands[1])); + operands[2] = force_reg (SImode, operands[2]); + operands[3] = force_reg (SImode, operands[3]); rtx op1 = gen_reg_rtx (DImode); rtx op2 = gen_reg_rtx (DImode); convert_move (op1, operands[2], uns_flag); |