https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112402
Bug ID: 112402 Summary: [11/12/13/14 Regression] Path splitting causes if-conversion miss Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: missed-optimization Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: pinskia at gcc dot gnu.org Blocks: 94274 Target Milestone: --- Similar to PR 68541 except instead of having a diamond, we just have a triangle. Testcase: ``` int foo(signed char *p, int n) { int s = 0; int i; for (i = 0; i < n; i++) { int t; if (p[i] >= 0) t=1; else t=-1; s+=t; } return s; } ``` I noticed this while working on fixing PR 94274. Referenced Bugs: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94274 [Bug 94274] fold phi whose incoming args are defined from binary operations