The previous attempts at fixing this issue relied on marking the IR
changed only when CCP was able to fold an instruction during
propagation (KhronosGroup#3799,
KhronosGroup#3732).

Those fixes missed the case described in
KhronosGroup#3991.  In this case,
the folder never actually succeeds in folding the instruction, but it
does create constants in the process.

Fixed with this change.

Simplify logic to decide whether CCP modified the IR.

The previous attempts at fixing this issue relied on marking the IR
changed only when CCP was able to fold an instruction during
propagation (#3799,
#3732).

Those fixes missed the case described in
#3991.  In this case,
the folder never actually succeeds in folding the instruction, but it
does create constants in the process.

Fixed with this change.

Roll third_party/glslang/ f257e0e..983698b (2 commits)

KhronosGroup/glslang@f257e0e...983698b

$ git log f257e0e..983698b --date=short --no-merges --format='%ad %ae %s'
2020-08-23 john Revert "Merge pull request KhronosGroup#2371 from RafaelMarinheiro/master"
2020-08-21 julius.ikkala Obey ENABLE_PCH CMake option

Created with:
  roll-dep third_party/glslang

Roll third_party/googletest/ adeef1929..1e315c5b1 (14 commits)

google/googletest@adeef19...1e315c5

$ git log adeef1929..1e315c5b1 --date=short --no-merges --format='%ad %ae %s'
2020-08-20 absl-team Googletest export
2020-08-17 absl-team Googletest export
2020-08-12 robert.earhart Export LICENSE
2020-08-03 amatanhead Remove ThrowsMessageHasSubstr and fix some nits after review
2020-07-13 amatanhead Cleanup a bulky expression, document implementation details
2020-07-07 amatanhead Fix build under msvc
2020-07-07 amatanhead Update tests after changing an error message
2020-07-07 amatanhead Fix build under msvc
2020-07-07 amatanhead Add a test to ensure that the `Throws` matcher only invokes its argument once.
2020-07-07 amatanhead Add a test for duplicate catch clauses in throw matchers, fix a couple of nitpicks.
2020-07-03 amatanhead Add missing documentation piece
2020-06-20 amatanhead Small improvements: code style and property name
2020-06-20 amatanhead Add matchers for testing exception properties
2018-05-01 lantw44 Avoid using environ on FreeBSD

Created with:
  roll-dep third_party/googletest

Roll third_party/spirv-cross/ 4c7944bb4..685f86471 (6 commits)

KhronosGroup/SPIRV-Cross@4c7944b...685f864

$ git log 4c7944bb4..685f86471 --date=short --no-merges --format='%ad %ae %s'
2020-08-24 post Run format_all.sh.
2020-08-24 post Work around annoying warning on GCC 10.2.
2020-08-21 post Overhaul how we deal with reserved identifiers.
2020-08-20 post HLSL: Fix FragCoord.w.
2020-08-20 post HLSL: Deal with partially filled 16-byte word in cbuffers.
2020-08-20 post HLSL: Fix bug in is_packing_standard for cbuffer.

Created with:
  roll-dep third_party/spirv-cross

Roll third_party/spirv-tools/ b8de4f5..4dd1223 (9 commits)

KhronosGroup/SPIRV-Tools@b8de4f5...4dd1223

$ git log b8de4f5..4dd1223 --date=short --no-merges --format='%ad %ae %s'
2020-08-21 andreperezmaselco.developer spirv-fuzz: Add words instead of logical operands (KhronosGroup#3728)
2020-08-20 dnovillo CCP should mark IR changed if it created new constants. (KhronosGroup#3732)
2020-08-19 antonikarp spirv-fuzz: add FuzzerPassAddCompositeInserts (KhronosGroup#3606)
2020-08-19 antonikarp spirv-fuzz: Support pointer types in FuzzerPassAddParameters (KhronosGroup#3627)
2020-08-18 jaebaek Let ADCE pass check DebugScope (KhronosGroup#3703)
2020-08-18 andreperezmaselco.developer spirv-opt: Implement opt::Function::HasEarlyReturn function (KhronosGroup#3711)
2020-08-17 andreperezmaselco.developer spirv-fuzz: Check termination instructions when donating modules (KhronosGroup#3710)
2020-08-17 jackoalan Fix -Wrange-loop-analysis warning (KhronosGroup#3712)
2020-08-17 andreperezmaselco.developer spirv-fuzz: Check header dominance when adding dead block (KhronosGroup#3694)

Created with:
  roll-dep third_party/spirv-tools