| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | Revert "Temporarily Revert "Add basic loop fusion pass."" | Eric Christopher | 2019-04-17 | 1 | -0/+43 |
| | | | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552 | ||||
| * | Temporarily Revert "Add basic loop fusion pass." | Eric Christopher | 2019-04-17 | 1 | -43/+0 |
| | | | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546 | ||||
| * | [LSR] Don't try and create post-inc expressions on non-rotated loops | James Molloy | 2016-08-15 | 1 | -0/+43 |
| If a loop is not rotated (for example when optimizing for size), the latch is not the backedge. If we promote an expression to post-inc form, we not only increase register pressure and add a COPY for that IV expression but for all IVs! Motivating testcase: void f(float *a, float *b, float *c, int n) { while (n-- > 0) *c++ = *a++ + *b++; } It's imperative that the pointer increments be located in the latch block and not the header block; if not, we cannot use post-increment loads and stores and we have to keep both the post-inc and pre-inc values around until the end of the latch which bloats register usage. llvm-svn: 278658 | |||||
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index : bcm5719-llvm | |
| Project Ortega BCM5719 LLVM | Raptor Computing Systems |
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