llvm-project

Commit Graph

Author	SHA1	Message	Date
Jinsong Ji	84a2c78082	[PowerPC][NFC] Update testcase to avoid dead code The original testcase might be optimized out due to dead code, update the testcase to avoid it. llvm-svn: 365810	2019-07-11 19:16:33 +00:00
Jinsong Ji	fee855b5bc	[MachinePipeliner] Fix risky iterator usage R++, --R When we calculate MII, we use two loops, one with iterator R++ to check whether we can reserve the resource, then --R to move back the iterator to do reservation. This is risky, as R++, --R may not point to the same element at all. The can cause wrong MII. Differential Revision: https://reviews.llvm.org/D63536 llvm-svn: 364353	2019-06-25 21:50:56 +00:00
Jinsong Ji	bc7fc3ecb6	[PowerPC][NFC]Add a test for MachinePipeliner bug llvm-svn: 364350	2019-06-25 20:56:17 +00:00

Author

SHA1

Message

Date

Jinsong Ji

84a2c78082

[PowerPC][NFC] Update testcase to avoid dead code

The original testcase might be optimized out due to dead code,
update the testcase to avoid it.

llvm-svn: 365810

2019-07-11 19:16:33 +00:00

Jinsong Ji

fee855b5bc

[MachinePipeliner] Fix risky iterator usage R++, --R

When we calculate MII, we use two loops, one with iterator R++ to
check whether we can reserve the resource, then --R to move back
the iterator to do reservation.

This is risky, as R++, --R may not point to the same element at all.
The can cause wrong MII.

Differential Revision: https://reviews.llvm.org/D63536

llvm-svn: 364353

2019-06-25 21:50:56 +00:00

Jinsong Ji

bc7fc3ecb6

[PowerPC][NFC]Add a test for MachinePipeliner bug

llvm-svn: 364350

2019-06-25 20:56:17 +00:00

3 Commits