[InstCombine] Signed saturation patterns
[llvm-core.git] / test / CodeGen / X86 / coalesce-dead-lanes.mir
bloba1bd9df9e67b45ace2660ac0e20067a7e4e01058
1 # RUN: llc -run-pass simple-register-coalescing -O0 -mtriple x86_64-pc-linux-gnu -o - %s | FileCheck %s
3 ---
4 name:            foo
5 tracksRegLiveness: true
6 body:             |
7   bb.0:
8     undef %18.sub_8bit_hi:gr16_abcd = COPY undef $al
9     %1:gr16_abcd = COPY killed %18
10     dead %8:gr8 = COPY undef %1.sub_8bit_hi
11     $al = COPY undef %8
12 ...
14 # This used to hit an assertion:
15 #   lib/CodeGen/RegisterCoalescer.cpp:1110: RegisterCoalescer::reMaterializeTrivialDef(...): Assertion `ValNo && "CopyMI input register not live"' failed.
17 # CHECK_LABEL: name:            foo
18 # CHECK:       bb.0:
19 # CHECK-NEXT:    $al = COPY undef %2:gr8