search for: l2_loadruh_io

Displaying 4 results from an estimated 4 matches for "l2_loadruh_io".

Tail merging "undef" with a defined register: wrong code
2017 Jul 28
2
Tail merging "undef" with a defined register: wrong code
...going to be simple, unfortunately. Here's the original example again: --- name: fred tracksRegLiveness: true body: | bb.0: successors: %bb.1, %bb.2 J2_jumpt undef %p0, %bb.2, implicit-def %pc J2_jump %bb.1, implicit-def %pc bb.1: successors: %bb.3 %r0 = L2_loadruh_io undef %r0, 0 PS_storerhabs 0, killed %r0 J2_jump %bb.3, implicit-def %pc bb.2: successors: %bb.3 PS_storerhabs 0, undef %r0 J2_jump %bb.3, implicit-def %pc bb.3: PS_jmpret killed %r31, implicit-def %pc ... If the merging process produced this interm...
Tail merging "undef" with a defined register: wrong code
2017 Jul 27
2
Tail merging "undef" with a defined register: wrong code
...ver doing so can actually generate wrong code: Consider this (valid code): --- name: fred tracksRegLiveness: true body: | bb.0: successors: %bb.1, %bb.2 J2_jumpt undef %p0, %bb.2, implicit-def %pc J2_jump %bb.1, implicit-def %pc bb.1: successors: %bb.3 %r0 = L2_loadruh_io undef %r0, 0 PS_storerhabs 0, killed %r0 J2_jump %bb.3, implicit-def %pc bb.2: successors: %bb.3 PS_storerhabs 0, undef %r0 J2_jump %bb.3, implicit-def %pc bb.3: PS_jmpret killed %r31, implicit-def %pc ... Run: llc -march=hexagon -run-pass branch-fo...
Tail merging "undef" with a defined register: wrong code
2017 Jul 28
2
Tail merging "undef" with a defined register: wrong code
...d >> tracksRegLiveness: true >> >> body: | >> bb.0: >> successors: %bb.1, %bb.2 >> J2_jumpt undef %p0, %bb.2, implicit-def %pc >> J2_jump %bb.1, implicit-def %pc >> >> bb.1: >> successors: %bb.3 >> %r0 = L2_loadruh_io undef %r0, 0 >> PS_storerhabs 0, killed %r0 >> J2_jump %bb.3, implicit-def %pc >> >> bb.2: >> successors: %bb.3 >> PS_storerhabs 0, undef %r0 >> J2_jump %bb.3, implicit-def %pc >> >> bb.3: >> PS_jmpret...
Tail merging "undef" with a defined register: wrong code
2017 Jul 27
2
Tail merging "undef" with a defined register: wrong code
...d >> tracksRegLiveness: true >> >> body: | >> bb.0: >> successors: %bb.1, %bb.2 >> J2_jumpt undef %p0, %bb.2, implicit-def %pc >> J2_jump %bb.1, implicit-def %pc >> >> bb.1: >> successors: %bb.3 >> %r0 = L2_loadruh_io undef %r0, 0 >> PS_storerhabs 0, killed %r0 >> J2_jump %bb.3, implicit-def %pc >> >> bb.2: >> successors: %bb.3 >> PS_storerhabs 0, undef %r0 >> J2_jump %bb.3, implicit-def %pc >> >> bb.3: >> PS_jmpret...