https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113193
Bug ID: 113193
Summary: [SH] ICE in gen_reg_rtx, at emit-rtl.cc:1177 with
-mfcsa -funsafe-math-operations
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zack+gcc at buhman dot org
Target Milestone: ---
Target: sh*-*-*
Created attachment 56971
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56971&action=edit
-freport-bug
On the sh*-*-* target it is possible to generate an ICE at all optimization
levels above -O0 with -mfcsa -funsafe-math-optimizations , for certain
sequences of valid code that contain __builtin_cosf and/or __builtin_sinf.
The attached -freport-bug output is one (500-line) example that only appears to
trigger this ICE at -O3, but other (perhaps more convoluted) examples are
possible.
This affects all GCC versions between at least 9.5.0 and the current 14.0
master, inclusive. I did not test GCC versions older than 9.5.0.
