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| author | Pat Haugen <pthaugen@us.ibm.com> | 2017-09-14 18:29:44 +0000 |
|---|---|---|
| committer | Pat Haugen <pthaugen@gcc.gnu.org> | 2017-09-14 18:29:44 +0000 |
| commit | 44e13e607f63ef73c75cd64b041f24b0eeafd992 (patch) | |
| tree | 19b2d65af1c02d3ff136cf98414c82940da1f8b1 /gcc | |
| parent | bc998d034f45d1828a8663b2eed928faf22a7d01 (diff) | |
| download | gcc-44e13e607f63ef73c75cd64b041f24b0eeafd992.zip gcc-44e13e607f63ef73c75cd64b041f24b0eeafd992.tar.gz gcc-44e13e607f63ef73c75cd64b041f24b0eeafd992.tar.bz2 | |
rs6000.c (rs6000_set_up_by_prologue): Make sure the TOC reg (r2) isn't in the set of registers defined in the prologue.
* config/rs6000/rs6000.c (rs6000_set_up_by_prologue): Make sure the TOC
reg (r2) isn't in the set of registers defined in the prologue.
* gcc.target/powerpc/r2_shrink-wrap.c: New.
From-SVN: r252768
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/powerpc/r2_shrink-wrap.c | 17 |
4 files changed, 31 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 31c9d0a..b66faeb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2017-09-14 Pat Haugen <pthaugen@us.ibm.com> + + * config/rs6000/rs6000.c (rs6000_set_up_by_prologue): Make sure the TOC + reg (r2) isn't in the set of registers defined in the prologue. + 2017-09-14 Richard Sandiford <richard.sandiford@linaro.org> Alan Hayward <alan.hayward@arm.com> David Sherwood <david.sherwood@arm.com> diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 3fee228..6dd726e 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -37804,6 +37804,11 @@ rs6000_set_up_by_prologue (struct hard_reg_set_container *set) add_to_hard_reg_set (&set->set, Pmode, RS6000_PIC_OFFSET_TABLE_REGNUM); if (cfun->machine->split_stack_argp_used) add_to_hard_reg_set (&set->set, Pmode, 12); + + /* Make sure the hard reg set doesn't include r2, which was possibly added + via PIC_OFFSET_TABLE_REGNUM. */ + if (TARGET_TOC) + remove_from_hard_reg_set (&set->set, Pmode, TOC_REGNUM); } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index ad6ef29..005c0b9 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2017-09-14 Pat Haugen <pthaugen@us.ibm.com> + + * gcc.target/powerpc/r2_shrink-wrap.c: New. + 2017-09-14 Will Schmidt <will_schmidt@vnet.ibm.com> * gcc.target/powerpc/fold-vec-ld-longlong.c: Add diff --git a/gcc/testsuite/gcc.target/powerpc/r2_shrink-wrap.c b/gcc/testsuite/gcc.target/powerpc/r2_shrink-wrap.c new file mode 100644 index 0000000..b81b9b1 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/r2_shrink-wrap.c @@ -0,0 +1,17 @@ +/* { dg-do compile { target lp64 } } */ +/* { dg-options "-O2 -fdump-rtl-pro_and_epilogue" } */ + +/* Verify we move the prologue past the TOC reference of 'j' and shrink-wrap + the function. */ +void bar(); +int j; +void foo(int i) +{ + j = i; + if (i > 0) + { + bar(); + } +} + +/* { dg-final { scan-rtl-dump-times "Performing shrink-wrapping" 1 "pro_and_epilogue" } } */ |