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| author | Christian Bruel <christian.bruel@st.com> | 2007-06-08 09:58:41 +0200 |
|---|---|---|
| committer | Christian Bruel <chrbr@gcc.gnu.org> | 2007-06-08 09:58:41 +0200 |
| commit | 4aa97413d3845089735af2d5a5fe7b01eeae6008 (patch) | |
| tree | 703c2b7fb2c08be557096002e275a7a02efaf2ad /gcc/loop-iv.c | |
| parent | 1fc3998daa162619e2826523d2b9efad2a3c7725 (diff) | |
| download | gcc-4aa97413d3845089735af2d5a5fe7b01eeae6008.zip gcc-4aa97413d3845089735af2d5a5fe7b01eeae6008.tar.gz gcc-4aa97413d3845089735af2d5a5fe7b01eeae6008.tar.bz2 | |
re PR target/29953 ([SH-4] Perfomance regression in loops. cmp/eq used instead of dt)
PR target/29953
* config/sh/sh.md (doloop_end): New pattern and splitter.
* loop-iv.c (simple_rhs_p): Check for hardware registers.
From-SVN: r125564
Diffstat (limited to 'gcc/loop-iv.c')
| -rw-r--r-- | gcc/loop-iv.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index bdf1508..0b6d46d 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -1293,7 +1293,7 @@ simple_rhs_p (rtx rhs) rtx op0, op1; if (CONSTANT_P (rhs) - || REG_P (rhs)) + || (REG_P (rhs) && !HARD_REGISTER_P (rhs))) return true; switch (GET_CODE (rhs)) @@ -1303,9 +1303,9 @@ simple_rhs_p (rtx rhs) op0 = XEXP (rhs, 0); op1 = XEXP (rhs, 1); /* Allow reg + const sets only. */ - if (REG_P (op0) && CONSTANT_P (op1)) + if (REG_P (op0) && !HARD_REGISTER_P (op0) && CONSTANT_P (op1)) return true; - if (REG_P (op1) && CONSTANT_P (op0)) + if (REG_P (op1) && !HARD_REGISTER_P (op1) && CONSTANT_P (op0)) return true; return false; |