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llvm-mirror/test/CodeGen/Hexagon/early-if-debug.mir
Vedant Kumar 73e2a5da53 [MachineVerifier] Verify that a DBG_VALUE has a debug location
Summary:
Verify that each DBG_VALUE has a debug location. This is required by
LiveDebugValues, and perhaps by other late passes.

There's an exception for tests: lots of tests use a two-operand form of
DBG_VALUE for convenience. There's no reason to prevent that.

This is an extension of D80665, but there's no dependency.

Reviewers: aprantl, jmorse, davide, chrisjackson

Subscribers: hiraditya, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D80670
2020-05-28 13:53:40 -07:00

53 lines
1.2 KiB
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# RUN: llc -march=hexagon -eif-limit=4 -run-pass hexagon-early-if -o - %s | FileCheck %s
# Check that even with the limit of 4 instructions, the block bb.1 is
# if-converted.
# CHECK-LABEL: bb.0:
# CHECK: %0:intregs = COPY $r0
# CHECK: %1:predregs = C2_cmpeqi %0, 0
# CHECK: %2:intregs = A2_tfrsi 123
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: %3:intregs = A2_tfrsi 321
# CHECK: %5:intregs = C2_mux %1, %2, %3
--- |
define void @foo() {
ret void
}
...
---
name: foo
tracksRegLiveness: true
registers:
- { id: 0, class: intregs }
- { id: 1, class: predregs }
- { id: 2, class: intregs }
- { id: 3, class: intregs }
- { id: 4, class: intregs }
body: |
bb.0:
liveins: $r0
%0 = COPY $r0
%1 = C2_cmpeqi %0, 0
%2 = A2_tfrsi 123
J2_jumpt %1, %bb.2, implicit-def dead $pc
J2_jump %bb.1, implicit-def dead $pc
bb.1:
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
%3 = A2_tfrsi 321
bb.2:
%4 = PHI %2, %bb.0, %3, %bb.1
...